feat: space avatar color with color picker UI

Add avatarColor field to spaces, matching the user avatar color system.
Spaces get a random color on creation and owners can change it in space
settings. The color controls the fallback gradient when no icon is uploaded,
replacing the old deterministic hash-based gradient. Includes full
federation support, explore page, mutual spaces, and color picker in both
create and settings modals.

packages/server/src/db/migrate.ts

@@ -105,6 +105,12 @@ export function runMigrations(db: Database.Database): void {
       columns: [
         { name: 'is_deleted', type: 'INTEGER DEFAULT 0' },
       ]
+    },
+    {
+      name: 'spaces',
+      columns: [
+        { name: 'avatar_color', type: 'TEXT' },
+      ]
     }
   ];
 

packages/server/src/db/schema.ts

@@ -25,6 +25,7 @@ export const spaces = sqliteTable('spaces', {
   name: text('name').notNull(),
   icon: text('icon'),
   banner: text('banner'),
+  avatarColor: text('avatar_color'),
   ownerId: text('owner_id').notNull().references(() => users.id),
   inviteCode: text('invite_code').unique(),
   visibility: text('visibility').default('private'),

packages/server/src/routes/explore.ts

@@ -146,6 +146,7 @@ function buildFullSpace(spaceId: string, forUserId: string): SpaceWithChannelsAn
     name: space.name,
     icon: space.icon,
     banner: space.banner ?? null,
+    avatarColor: (space.avatarColor as SpaceWithChannelsAndMembers['avatarColor']) ?? null,
     ownerId: space.ownerId,
     inviteCode: space.inviteCode,
     visibility: (space.visibility ?? 'private') as SpaceWithChannelsAndMembers['visibility'],
@@ -203,7 +204,7 @@ export async function exploreRoutes(app: FastifyInstance): Promise<void> {
 
     let countSql = `SELECT COUNT(DISTINCT s.id) as total FROM spaces s WHERE s.visibility IN ('public', 'request')`;
     let querySql = `
-      SELECT s.id, s.name, s.icon, s.banner, s.description, s.visibility, s.created_at,
+      SELECT s.id, s.name, s.icon, s.banner, s.avatar_color, s.description, s.visibility, s.created_at,
              COUNT(sm.user_id) as member_count
       FROM spaces s
       LEFT JOIN space_members sm ON sm.space_id = s.id
@@ -227,6 +228,7 @@ export async function exploreRoutes(app: FastifyInstance): Promise<void> {
       name: string;
       icon: string | null;
       banner: string | null;
+      avatar_color: string | null;
       description: string | null;
       visibility: string;
       created_at: number;
@@ -238,6 +240,7 @@ export async function exploreRoutes(app: FastifyInstance): Promise<void> {
       name: r.name,
       icon: r.icon,
       banner: r.banner,
+      avatarColor: (r.avatar_color as ExploreSpace['avatarColor']) ?? null,
       description: r.description,
       visibility: r.visibility as ExploreSpace['visibility'],
       memberCount: r.member_count,

packages/server/src/routes/spaces.ts

@@ -18,6 +18,7 @@ import type {
   SpaceWithChannelsAndMembers,
   Role,
 } from '@backspace/shared';
+import { AVATAR_COLORS } from '@backspace/shared';
 import { sanitizeUser } from '../utils/sanitize.js';
 import { checkVoicePermissions } from '../ws/events.js';
 
@@ -27,6 +28,7 @@ function rowToSpace(row: typeof schema.spaces.$inferSelect): Space {
     name: row.name,
     icon: row.icon,
     banner: row.banner ?? null,
+    avatarColor: (row.avatarColor as Space['avatarColor']) ?? null,
     ownerId: row.ownerId,
     inviteCode: row.inviteCode,
     visibility: (row.visibility ?? 'private') as Space['visibility'],
@@ -56,7 +58,7 @@ export async function spaceRoutes(app: FastifyInstance): Promise<void> {
   app.post<{ Body: CreateSpaceRequest }>('/api/spaces', {
     preHandler: authenticate,
   }, async (request, reply) => {
-    const { name, icon, banner, visibility, description } = request.body;
+    const { name, icon, banner, avatarColor, visibility, description } = request.body;
 
     if (!name || typeof name !== 'string') {
       return reply.code(400).send({ error: 'Space name is required', statusCode: 400 });
@@ -74,6 +76,11 @@ export async function spaceRoutes(app: FastifyInstance): Promise<void> {
     // Validate description
     const safeDescription = description ? description.trim().slice(0, 200) || null : null;
 
+    // Validate avatarColor — assign random if not provided
+    const safeAvatarColor = avatarColor && (AVATAR_COLORS as readonly string[]).includes(avatarColor)
+      ? avatarColor
+      : AVATAR_COLORS[Math.floor(Math.random() * AVATAR_COLORS.length)];
+
     const db = getDb();
     const spaceId = generateSnowflake();
     const channelId = generateSnowflake();
@@ -87,6 +94,7 @@ export async function spaceRoutes(app: FastifyInstance): Promise<void> {
         name: trimmedName,
         icon: icon ?? null,
         banner: banner ?? null,
+        avatarColor: safeAvatarColor,
         ownerId: request.userId,
         inviteCode,
         visibility: safeVisibility,
@@ -272,7 +280,7 @@ export async function spaceRoutes(app: FastifyInstance): Promise<void> {
     preHandler: authenticate,
   }, async (request, reply) => {
     const { id } = request.params;
-    const { name, icon, banner, visibility, description } = request.body;
+    const { name, icon, banner, avatarColor, visibility, description } = request.body;
     const db = getDb();
 
     const server = db.select().from(schema.spaces).where(eq(schema.spaces.id, id)).get();
@@ -302,6 +310,16 @@ export async function spaceRoutes(app: FastifyInstance): Promise<void> {
       updates.banner = banner || null;
     }
 
+    if (avatarColor !== undefined) {
+      if (avatarColor === '') {
+        updates.avatarColor = null;
+      } else if ((AVATAR_COLORS as readonly string[]).includes(avatarColor)) {
+        updates.avatarColor = avatarColor;
+      } else {
+        return reply.code(400).send({ error: 'Invalid avatar color', statusCode: 400 });
+      }
+    }
+
     if (visibility !== undefined) {
       const validVisibilities = ['public', 'request', 'private'];
       if (!validVisibilities.includes(visibility)) {

packages/server/src/routes/users.ts

@@ -493,7 +493,7 @@ export async function userRoutes(app: FastifyInstance): Promise<void> {
     const mutualSpaceIds = [...mySpaceIds].filter((id) => targetSpaceIds.has(id));
 
     const mutualSpaces = mutualSpaceIds.length > 0
-      ? db.select({ id: schema.spaces.id, name: schema.spaces.name, icon: schema.spaces.icon })
+      ? db.select({ id: schema.spaces.id, name: schema.spaces.name, icon: schema.spaces.icon, avatarColor: schema.spaces.avatarColor })
           .from(schema.spaces)
           .where(inArray(schema.spaces.id, mutualSpaceIds))
           .all()

packages/server/src/ws/handler.ts

@@ -7,6 +7,7 @@ import { handleClientEvent } from './events.js';
 import { computePermissions, PermissionBits, permissionsToString } from '../utils/permissions.js';
 import type {
   User,
+  Space,
   SpaceWithChannelsAndMembers,
   MemberWithUser,
   Channel,
@@ -793,6 +794,7 @@ function buildReadyPayload(userId: string): {
         name: spaceRow.name,
         icon: spaceRow.icon,
         banner: spaceRow.banner ?? null,
+        avatarColor: (spaceRow.avatarColor as Space['avatarColor']) ?? null,
         ownerId: spaceRow.ownerId,
         inviteCode: spaceRow.inviteCode,
         visibility: (spaceRow.visibility ?? 'private') as SpaceWithChannelsAndMembers['visibility'],

packages/shared/src/types.ts

@@ -43,6 +43,7 @@ export interface Space {
   name: string;
   icon: string | null;
   banner: string | null;
+  avatarColor: AvatarColor | null;
   ownerId: string;
   inviteCode: string | null;
   visibility: SpaceVisibility;
@@ -55,6 +56,7 @@ export interface ExploreSpace {
   name: string;
   icon: string | null;
   banner: string | null;
+  avatarColor: AvatarColor | null;
   description: string | null;
   visibility: SpaceVisibility;
   memberCount: number;
@@ -323,6 +325,7 @@ export interface CreateSpaceRequest {
   name: string;
   icon?: string;
   banner?: string;
+  avatarColor?: string;
   visibility?: SpaceVisibility;
   description?: string;
 }
@@ -343,6 +346,7 @@ export interface UpdateSpaceRequest {
   name?: string;
   icon?: string;
   banner?: string;
+  avatarColor?: string;
   visibility?: SpaceVisibility;
   description?: string;
 }

packages/web/src/api/client.ts

@@ -60,7 +60,7 @@ export class BackspaceApiClient {
     verifyPassword: (password: string) => Promise<VerifyPasswordResponse>;
     changePassword: (data: ChangePasswordRequest) => Promise<ChangePasswordResponse>;
     deleteAccount: (data: DeleteAccountRequest) => Promise<{ success: boolean }>;
-    getMutuals: (id: string, homeUserId?: string) => Promise<{ mutualFriends: User[]; mutualSpaces: { id: string; name: string; icon: string | null }[] }>;
+    getMutuals: (id: string, homeUserId?: string) => Promise<{ mutualFriends: User[]; mutualSpaces: { id: string; name: string; icon: string | null; avatarColor: string | null }[] }>;
   };
 
   readonly spaces: {
@@ -256,7 +256,7 @@ export class BackspaceApiClient {
         const params = new URLSearchParams();
         if (homeUserId) params.set('homeUserId', homeUserId);
         const qs = params.toString();
-        return request<{ mutualFriends: User[]; mutualSpaces: { id: string; name: string; icon: string | null }[] }>(
+        return request<{ mutualFriends: User[]; mutualSpaces: { id: string; name: string; icon: string | null; avatarColor: string | null }[] }>(
           'GET', `/users/${id}/mutuals${qs ? `?${qs}` : ''}`
         );
       },

packages/web/src/components/chat/ExplorePage.tsx

@@ -222,7 +222,7 @@ function SpaceCard({
   const [joinError, setJoinError] = useState('');
   const [iconGradient, setIconGradient] = useState<string | null>(null);
 
-  const fallbackGradient = getSpaceGradient(space.id, space.name).gradient;
+  const fallbackGradient = getSpaceGradient(space.id, space.name, space.avatarColor).gradient;
   const isPublic = space.visibility === 'public';
   const isJoined = space.joined === true;
   const originLabel = space._instanceOrigin

packages/web/src/components/layout/SpaceSidebar.tsx

@@ -14,6 +14,7 @@ interface SidebarItemProps {
   id: string;
   name: string;
   icon?: string | null;
+  avatarColor?: string | null;
   active: boolean;
   onClick: () => void;
   onContextMenu?: (e: React.MouseEvent) => void;
@@ -26,7 +27,7 @@ interface SidebarItemProps {
   tooltipText?: string;
 }
 
-function SidebarItem({ id, name, icon, active, onClick, onContextMenu, type = 'space', actionType, hasUnread, dimmed, federationBadge, federationDisconnected, tooltipText }: SidebarItemProps) {
+function SidebarItem({ id, name, icon, avatarColor, active, onClick, onContextMenu, type = 'space', actionType, hasUnread, dimmed, federationBadge, federationDisconnected, tooltipText }: SidebarItemProps) {
   const [isHovered, setIsHovered] = useState(false);
   const firstLetter = name.charAt(0).toUpperCase();
 
@@ -51,9 +52,9 @@ function SidebarItem({ id, name, icon, active, onClick, onContextMenu, type = 's
     // Space type — if it has a custom icon image, no gradient needed
     if (icon) return undefined;
 
-    const spaceGrad = getSpaceGradient(id, name);
+    const spaceGrad = getSpaceGradient(id, name, avatarColor);
     return { background: spaceGrad.gradient };
-  }, [type, id, name, icon, isHovered]);
+  }, [type, id, name, icon, avatarColor, isHovered]);
 
   const getButtonClasses = () => {
     const base = 'w-10 h-10 flex items-center justify-center duration-200 overflow-hidden [transition:border-radius_0.2s,background_0.2s,color_0.2s]';
@@ -562,6 +563,7 @@ export function SpaceSidebar() {
           id={space.id}
           name={space.name}
           icon={space.icon}
+          avatarColor={space.avatarColor}
           active={currentSpaceId === space.id}
           onClick={() => handleSpaceClick(space.id)}
           onContextMenu={(e) => handleSpaceContextMenu(space.id, e)}
@@ -588,6 +590,7 @@ export function SpaceSidebar() {
                 id={space.id}
                 name={space.name}
                 icon={space.icon}
+                avatarColor={space.avatarColor}
                 active={currentSpaceId === space.id}
                 onClick={() => handleSpaceClick(space.id)}
                 onContextMenu={(e) => handleSpaceContextMenu(space.id, e)}

packages/web/src/components/modals/CreateSpace.tsx

@@ -5,7 +5,9 @@ import { useSpaceStore } from '../../stores/spaceStore';
 import { useUIStore } from '../../stores/uiStore';
 import { useNavigate } from 'react-router-dom';
 import { api } from '../../api/client';
-import type { SpaceVisibility } from '@backspace/shared';
+import { AVATAR_COLORS } from '@backspace/shared';
+import type { SpaceVisibility, AvatarColor } from '@backspace/shared';
+import { SPACE_GRADIENT_MAP, getSpaceGradient } from '../../utils/gradients';
 
 const visibilityOptions: { value: SpaceVisibility; label: string; desc: string }[] = [
   { value: 'private', label: 'Private', desc: 'Only people with an invite link can join' },
@@ -21,6 +23,9 @@ export function CreateSpaceModal() {
   const [iconPreview, setIconPreview] = useState<string | null>(null);
   const [uploadingIcon, setUploadingIcon] = useState(false);
   const [cropSrc, setCropSrc] = useState<string | null>(null);
+  const [avatarColor, setAvatarColor] = useState<AvatarColor>(
+    AVATAR_COLORS[Math.floor(Math.random() * AVATAR_COLORS.length)] ?? 'mint'
+  );
   const [error, setError] = useState('');
   const [isLoading, setIsLoading] = useState(false);
   const fileInputRef = useRef<HTMLInputElement>(null);
@@ -81,6 +86,7 @@ export function CreateSpaceModal() {
     if (iconPreview) URL.revokeObjectURL(iconPreview);
     setIconPreview(null);
     setCropSrc(null);
+    setAvatarColor(AVATAR_COLORS[Math.floor(Math.random() * AVATAR_COLORS.length)] ?? 'mint');
     setError('');
   };
 
@@ -98,6 +104,7 @@ export function CreateSpaceModal() {
       const space = await createSpace({
         name: name.trim(),
         icon: iconFilename ?? undefined,
+        avatarColor,
         visibility,
         description: description.trim() || undefined,
       });
@@ -126,7 +133,8 @@ export function CreateSpaceModal() {
             type="button"
             onClick={() => fileInputRef.current?.click()}
             disabled={uploadingIcon}
-            className="relative w-20 h-20 rounded-full bg-surface-input border-2 border-dashed border-border-subtle hover:border-accent-primary transition-colors flex items-center justify-center overflow-hidden group"
+            className="relative w-20 h-20 rounded-full border-2 border-dashed border-border-subtle hover:border-accent-primary transition-colors flex items-center justify-center overflow-hidden group"
+            style={!iconPreview ? { background: getSpaceGradient(undefined, name || 'S', avatarColor).gradient } : undefined}
           >
             {iconPreview ? (
               <>
@@ -139,7 +147,7 @@ export function CreateSpaceModal() {
                 </div>
               </>
             ) : (
-              <div className="flex flex-col items-center gap-1 text-txt-tertiary group-hover:text-accent-primary transition-colors">
+              <div className="flex flex-col items-center gap-1 text-white/90 group-hover:text-white transition-colors">
                 {uploadingIcon ? (
                   <svg className="w-6 h-6 animate-spin" fill="none" viewBox="0 0 24 24">
                     <circle className="opacity-25" cx="12" cy="12" r="10" stroke="currentColor" strokeWidth="4" />
@@ -147,11 +155,8 @@ export function CreateSpaceModal() {
                   </svg>
                 ) : (
                   <>
-                    <svg className="w-6 h-6" fill="none" viewBox="0 0 24 24" stroke="currentColor" strokeWidth={1.5}>
-                      <path strokeLinecap="round" strokeLinejoin="round" d="M3 9a2 2 0 012-2h.93a2 2 0 001.664-.89l.812-1.22A2 2 0 0110.07 4h3.86a2 2 0 011.664.89l.812 1.22A2 2 0 0018.07 7H19a2 2 0 012 2v9a2 2 0 01-2 2H5a2 2 0 01-2-2V9z" />
-                      <path strokeLinecap="round" strokeLinejoin="round" d="M15 13a3 3 0 11-6 0 3 3 0 016 0z" />
-                    </svg>
-                    <span className="text-[10px] font-medium">Icon</span>
+                    <span className="text-2xl font-bold">{(name || 'S').charAt(0).toUpperCase()}</span>
+                    <span className="text-[9px] font-medium opacity-60">Upload</span>
                   </>
                 )}
               </div>
@@ -175,6 +180,32 @@ export function CreateSpaceModal() {
           )}
         </div>
 
+        {/* Icon Color */}
+        <div className="mb-4">
+          <label className="block text-xs font-bold text-txt-secondary uppercase mb-2">
+            Icon Color
+          </label>
+          <div className="flex gap-2 justify-center">
+            {AVATAR_COLORS.map((key) => {
+              const entry = SPACE_GRADIENT_MAP[key];
+              return (
+                <button
+                  key={key}
+                  type="button"
+                  onClick={() => setAvatarColor(key)}
+                  className="w-7 h-7 rounded-full border-2 transition-all hover:scale-110"
+                  style={{
+                    background: entry.gradient,
+                    borderColor: avatarColor === key ? 'white' : 'transparent',
+                    boxShadow: avatarColor === key ? `0 0 0 2px ${entry.glow}40` : 'none',
+                  }}
+                  title={key.charAt(0).toUpperCase() + key.slice(1)}
+                />
+              );
+            })}
+          </div>
+        </div>
+
         {/* Space Name */}
         <div className="mb-4">
           <label className="block text-xs font-bold text-txt-secondary uppercase mb-2">

packages/web/src/components/modals/UserProfileModal.tsx

@@ -433,7 +433,7 @@ export function UserProfileModal() {
                         ) : (
                           <div
                             className="w-8 h-8 rounded-lg flex items-center justify-center text-[13px] font-semibold text-white"
-                            style={{ background: getSpaceGradient(space.id, space.name).gradient }}
+                            style={{ background: getSpaceGradient(space.id, space.name, space.avatarColor).gradient }}
                           >
                             {space.name.charAt(0).toUpperCase()}
                           </div>

packages/web/src/components/modals/spaceSettingsPanels/OverviewPanel.tsx

@@ -1,6 +1,8 @@
 import React, { useState, useRef, useEffect, useMemo } from 'react';
 import { ImageCropModal } from '../../ui/ImageCropModal';
-import { getSpaceGradient } from '../../../utils/gradients';
+import { getSpaceGradient, SPACE_GRADIENT_MAP } from '../../../utils/gradients';
+import { AVATAR_COLORS } from '@backspace/shared';
+import type { AvatarColor } from '@backspace/shared';
 import { useSpaceStore } from '../../../stores/spaceStore';
 import { useAuthStore } from '../../../stores/authStore';
 import { useUIStore } from '../../../stores/uiStore';
@@ -41,6 +43,8 @@ export function OverviewPanel({ spaceId }: OverviewPanelProps) {
   const [bannerCropSrc, setBannerCropSrc] = useState<string | null>(null);
   const bannerFileInputRef = useRef<HTMLInputElement>(null);
 
+  const [avatarColorState, setAvatarColorState] = useState<AvatarColor | null>(space?.avatarColor ?? null);
+
   const [saving, setSaving] = useState(false);
   const [saveError, setSaveError] = useState('');
   const [saveSuccess, setSaveSuccess] = useState(false);
@@ -59,6 +63,7 @@ export function OverviewPanel({ spaceId }: OverviewPanelProps) {
   useEffect(() => {
     if (space) {
       setSpaceName(space.name);
+      setAvatarColorState(space.avatarColor ?? null);
       setIconFilename(null);
       if (iconPreview) {
         URL.revokeObjectURL(iconPreview);
@@ -70,14 +75,15 @@ export function OverviewPanel({ spaceId }: OverviewPanelProps) {
         setBannerPreview(null);
       }
     }
-  }, [space?.name, space?.icon, space?.banner]);
+  }, [space?.name, space?.icon, space?.banner, space?.avatarColor]);
 
   if (!space) return null;
 
   const hasNameChange = spaceName.trim() !== space.name;
   const hasIconChange = iconFilename !== null;
   const hasBannerChange = bannerFilename !== null;
-  const hasChanges = hasNameChange || hasIconChange || hasBannerChange;
+  const hasAvatarColorChange = avatarColorState !== (space.avatarColor ?? null);
+  const hasChanges = hasNameChange || hasIconChange || hasBannerChange || hasAvatarColorChange;
 
   const currentIconUrl = space.icon
     ? (space.icon.startsWith('http') ? space.icon : api.uploads.url(space.icon))
@@ -170,7 +176,7 @@ export function OverviewPanel({ spaceId }: OverviewPanelProps) {
     setSaveError('');
     setSaveSuccess(false);
     try {
-      const updates: { name?: string; icon?: string; banner?: string } = {};
+      const updates: { name?: string; icon?: string; banner?: string; avatarColor?: string } = {};
       if (hasNameChange) updates.name = spaceName.trim();
       if (hasIconChange) {
         updates.icon = iconFilename === '' ? '' : iconFilename!;
@@ -178,6 +184,9 @@ export function OverviewPanel({ spaceId }: OverviewPanelProps) {
       if (hasBannerChange) {
         updates.banner = bannerFilename === '' ? '' : bannerFilename!;
       }
+      if (hasAvatarColorChange) {
+        updates.avatarColor = avatarColorState ?? '';
+      }
       await updateSpace(spaceId, updates);
       setIconFilename(null);
       if (iconPreview) {
@@ -200,6 +209,7 @@ export function OverviewPanel({ spaceId }: OverviewPanelProps) {
 
   const handleDiscard = () => {
     setSpaceName(space.name);
+    setAvatarColorState(space.avatarColor ?? null);
     setIconFilename(null);
     if (iconPreview) {
       URL.revokeObjectURL(iconPreview);
@@ -296,7 +306,7 @@ export function OverviewPanel({ spaceId }: OverviewPanelProps) {
               ) : (
                 <div
                   className="w-full h-full rounded-full flex items-center justify-center text-white text-xl font-bold"
-                  style={{ background: getSpaceGradient(space.id, space.name).gradient }}
+                  style={{ background: getSpaceGradient(space.id, space.name, avatarColorState).gradient }}
                 >
                   {space.name.charAt(0).toUpperCase()}
                 </div>
@@ -329,6 +339,33 @@ export function OverviewPanel({ spaceId }: OverviewPanelProps) {
           </div>
         </div>
 
+        {/* Space Avatar Color */}
+        <div>
+          <label className="block text-xs text-txt-secondary mb-1.5">
+            Icon Color
+          </label>
+          <div className="flex gap-2">
+            {AVATAR_COLORS.map((key) => {
+              const entry = SPACE_GRADIENT_MAP[key];
+              return (
+                <button
+                  key={key}
+                  type="button"
+                  onClick={() => canManageSpace && setAvatarColorState(key)}
+                  disabled={!canManageSpace}
+                  className="w-7 h-7 rounded-full border-2 transition-all hover:scale-110 disabled:cursor-default disabled:hover:scale-100"
+                  style={{
+                    background: entry.gradient,
+                    borderColor: avatarColorState === key ? 'white' : 'transparent',
+                    boxShadow: avatarColorState === key ? `0 0 0 2px ${entry.glow}40` : 'none',
+                  }}
+                  title={key.charAt(0).toUpperCase() + key.slice(1)}
+                />
+              );
+            })}
+          </div>
+        </div>
+
         {/* Space Banner */}
         <div>
           <label className="block text-xs text-txt-secondary mb-1.5">

packages/web/src/stores/spaceStore.ts

@@ -367,6 +367,7 @@ export const useSpaceStore = create<SpaceState>((set, get) => ({
       name: s.name,
       icon: s.icon,
       banner: s.banner ?? null,
+      avatarColor: s.avatarColor ?? null,
       ownerId: s.ownerId,
       inviteCode: s.inviteCode,
       visibility: s.visibility ?? 'private' as const,
@@ -488,6 +489,7 @@ export const useSpaceStore = create<SpaceState>((set, get) => ({
       name: space.name,
       icon: space.icon,
       banner: space.banner ?? null,
+      avatarColor: space.avatarColor ?? null,
       ownerId: space.ownerId,
       inviteCode: space.inviteCode,
       visibility: space.visibility,

packages/web/src/utils/gradients.ts

@@ -38,7 +38,7 @@ export const AVATAR_GRADIENT_MAP: Record<AvatarColor, GradientEntry> = {
 };
 
 // ── Space icon gradients (space fallbacks) ──
-const SPACE_GRADIENTS: GradientEntry[] = [
+export const SPACE_GRADIENTS: GradientEntry[] = [
   grad('#ef4444', '#f97316', '#f97316'),   // red-orange
   grad('#ec4899', '#f472b6', '#ec4899'),   // pink
   grad('#14b8a6', '#06b6d4', '#06b6d4'),   // teal-cyan
@@ -48,6 +48,16 @@ const SPACE_GRADIENTS: GradientEntry[] = [
   grad('#059669', '#10b981', '#10b981'),   // mint
 ];
 
+export const SPACE_GRADIENT_MAP: Record<AvatarColor, GradientEntry> = {
+  coral:    SPACE_GRADIENTS[0]!,   // red-orange
+  rose:     SPACE_GRADIENTS[1]!,   // pink
+  teal:     SPACE_GRADIENTS[2]!,   // teal-cyan
+  amber:    SPACE_GRADIENTS[3]!,   // amber-yellow
+  sky:      SPACE_GRADIENTS[4]!,   // blue-indigo
+  lavender: SPACE_GRADIENTS[5]!,   // lavender
+  mint:     SPACE_GRADIENTS[6]!,   // mint
+};
+
 // ── Home button (DM / Backspace) — fixed indigo-purple gradient ──
 export const HOME_GRADIENT: GradientEntry = grad('#6366f1', '#8b5cf6', '#8b5cf6');
 
@@ -69,8 +79,11 @@ export function getAvatarGradient(id?: string | null, name?: string, avatarColor
   return AVATAR_GRADIENTS[hashString(key) % AVATAR_GRADIENTS.length]!;
 }
 
-/** Deterministic gradient for a space icon. Prefers ID for stability; falls back to name. */
-export function getSpaceGradient(id?: string | null, name?: string): GradientEntry {
+/** Deterministic gradient for a space icon. Uses stored avatarColor if available; falls back to hash. */
+export function getSpaceGradient(id?: string | null, name?: string, avatarColor?: string | null): GradientEntry {
+  if (avatarColor && avatarColor in SPACE_GRADIENT_MAP) {
+    return SPACE_GRADIENT_MAP[avatarColor as AvatarColor];
+  }
   const key = id || name || 'unknown';
   return SPACE_GRADIENTS[hashString(key) % SPACE_GRADIENTS.length]!;
 }

packages/web/src/utils/mutuals.ts

@@ -11,6 +11,7 @@ export interface MutualSpace {
   id: string;
   name: string;
   icon: string | null;
+  avatarColor: string | null;
   _instanceOrigin: string;
 }