diff --git a/2.Design/ROADMAP-M0-M1.md b/2.Design/ROADMAP-M0-M1.md
index b8b6972..93d1d97 100644
--- a/2.Design/ROADMAP-M0-M1.md
+++ b/2.Design/ROADMAP-M0-M1.md
@@ -359,7 +359,7 @@
 重做不是换配色，而是**先立设计系统、再让页面去用它**，否则下次还是东拼西凑。
 
 ### 4.1 设计系统（两端共用一套 token）
-- [x] 色板：纸白 `paper`、景泰蓝 `primary`、陶土橙 `clay`，语义色 sage/wheat/rust/sky（Web `tailwind.config.js`，安卓 `ui/Theme.kt` 同名同值）（2026-11-01 主色由墨绿改蓝系，语义色不变）
+- [x] 色板：冷白 `paper`、靛蓝 `primary`（`#4F46E5`）、陶土橙 `clay`，语义色 sage/wheat/rust/sky（Web `tailwind.config.js`，安卓 `ui/Theme.kt` 同名同值）（2026-11-01 主色由墨绿改蓝系；2026-11-02 再由沉靛蓝改为高饱和靛蓝 `#4F46E5`，中性色转 Slate 轴，语义色不变）
 - [x] 字号阶：11/12/13/14/15/18/22/26/36，正文 14、辅助 11/12；细描边 + 极轻投影 + 14dp 圆角
 - [x] 组件：卡片 / 按钮（primary、ghost、subtle、clay、danger）/ 状态 pill / 输入 / 空态 / 骨架屏 / 抽屉
 - [x] 图标：Web 用自绘线性图标集（`components/icons.tsx`），安卓用 Material Icons + 少量自绘，线宽一致
@@ -436,7 +436,7 @@
 - [x] `ui/UpdateDialog.kt`：当前/新版本号、更新说明、下载进度、失败重试；「允许安装未知应用」只跳系统设置，不代点
 - [x] 权限回来那一跳要接住：用户在系统设置里开完开关回到 App，再点同一个按钮时先复查权限，开了就直接装——否则按钮点了没反应
 - [x] 启动时自动查一次；首页底部有「检查更新」手动入口，结果用一句话回给用户
-- [x] 图标换成与 Web 的 `<Logo/>` 同一套图形（景泰蓝圆角底 + 三条浅蓝白圆头线 + 亮蓝点），生成 `mipmap-*/ic_launcher{,_round}.png` 与自适应图标 `mipmap-anydpi-v26/ic_launcher{,_round}.xml`，512px 预览存 `2.Design/screens/android-icon-512.png`
+- [x] 图标换成与 Web 的 `<Logo/>` 同一套图形（靛蓝圆角底 + 三条白色圆头线 + 淡紫点），生成 `mipmap-*/ic_launcher{,_round}.png` 与自适应图标 `mipmap-anydpi-v26/ic_launcher{,_round}.xml`，512px 预览存 `2.Design/screens/android-icon-512.png`
 - [x] 版本 `versionCode = 2` / `versionName = "0.2.0"`；发布签名从 `android/keystore.properties` 读，无该文件时回落调试签名（保证别人 clone 下来也能 `assembleRelease`）
 
 ### 6.3 构建环境（本机踩过的坑）
@@ -520,7 +520,7 @@
 ### 8.3 实现
 | 位置 | 内容 |
 |---|---|
-| `web/vite.config.ts` | manifest（standalone、主题色 `#274b73`、三个图标）+ workbox（`navigateFallback` 回退 `index.html`，`/vditor/` 走 CacheFirst，`/api/` NetworkOnly） |
+| `web/vite.config.ts` | manifest（standalone、主题色 `#4f46e5`、三个图标）+ workbox（`navigateFallback` 回退 `index.html`，`/vditor/` 走 CacheFirst，`/api/` NetworkOnly） |
 | `web/index.html` | favicon 改成同款 Logo（内联 SVG）、`theme-color`、`apple-touch-icon`、`viewport-fit=cover` |
 | `web/src/lib/pwa.ts` | 生产环境注册 SW、`dadao:pwa-update-ready` 事件、`applyServiceWorkerUpdate()`、`isStandalone()` |
 | `web/src/components/UpdatePrompt.tsx` | 底部卡片「有新版了」+ 稍后 / 刷新（**居中用 flex 包一层**：`animate-slide-up` 的 keyframes 自带 transform，会和 `-translate-x-1/2` 抢属性，手机窄屏上卡片会被推出屏幕右侧） |
diff --git a/2.Design/screens/android-icon-512.png b/2.Design/screens/android-icon-512.png
index 82bbb62..0bb77ab 100644
Binary files a/2.Design/screens/android-icon-512.png and b/2.Design/screens/android-icon-512.png differ
diff --git a/README.md b/README.md
index ea59a73..0986f19 100644
--- a/README.md
+++ b/README.md
@@ -28,7 +28,7 @@
 | 安卓端任务 / 看板 / 工单 / 知识 / 成员五个页面 | ✅ 编译成 APK（10.1 MB），模拟器上逐页跑通，截图见 [`2.Design/screens/`](2.Design/screens) |
 | 工单：升级不搬数据、受理→办理→提交→验收、驳回、改派、站内通知 | ✅ 后端 + Web + 安卓已通，双人 e2e 8 项全绿 |
 | 知识：工单验收自动生成草稿、核对后发布、来源可追、手记 | ✅ 后端 + Web + 安卓已通，e2e 7 项全绿 |
-| 界面：两端统一设计系统（纸白 / 景泰蓝 / 陶土橙，语义色、字号阶、组件库） | ✅ 已重做，见 [`2.Design/ROADMAP-M0-M1.md`](2.Design/ROADMAP-M0-M1.md) 第 4 节 |
+| 界面：两端统一设计系统（冷白 / 靛蓝 #4F46E5 / 陶土橙，语义色、字号阶、组件库） | ✅ 已重做，见 [`2.Design/ROADMAP-M0-M1.md`](2.Design/ROADMAP-M0-M1.md) 第 4 节 |
 | 富文本：备注 / 工单说明 / 知识正文支持图文混排与附件 | ✅ Web 用 Vditor 编辑、安卓用 Markwon 预览编辑（e2e 15 项全绿）；接口见 [`2.Design/API.md`](2.Design/API.md) 第 6 节 |
 | 知识切片与语义检索（混合打分、只搜已发布、带来源） | ✅ 已跑通：`real[]` + SQL 余弦（pgvector 待独立实例），`pytest` 5 个用例 + `e2e/retrieval.mjs` 6 项 |
 | 后端测试 | ✅ 79 passed，ruff 干净 |
diff --git a/android/README.md b/android/README.md
index 68fc342..57747c6 100644
--- a/android/README.md
+++ b/android/README.md
@@ -90,7 +90,7 @@ app/src/main/java/com/dadao/task/
 │   ├── Api.kt               OkHttp + kotlinx.serialization；信封解包、业务码抛 ApiException
 │   └── TokenStore.kt        令牌本地存储（TODO：换 EncryptedSharedPreferences）
 └── ui/
-    ├── Theme.kt             与 Web 一致的景泰蓝 + 陶土色板
+    ├── Theme.kt             与 Web 一致的靛蓝 #4F46E5 + 陶土色板
     ├── LoginScreen.kt       手机号 + 验证码
     ├── HomeScreen.kt        工作区列表 / 新建 / 生成邀请码
     ├── TaskListScreen.kt    任务视图切换、快速新建、勾选完成、详情与评论
diff --git a/android/app/src/main/java/com/dadao/task/ui/KnowledgeScreen.kt b/android/app/src/main/java/com/dadao/task/ui/KnowledgeScreen.kt
index 10eff2b..6087eaf 100644
--- a/android/app/src/main/java/com/dadao/task/ui/KnowledgeScreen.kt
+++ b/android/app/src/main/java/com/dadao/task/ui/KnowledgeScreen.kt
@@ -329,7 +329,7 @@ private fun KnowledgeBody(text: String) {
                 setTextIsSelectable(true)
                 textSize = 14f
                 setLineSpacing(0f, 1.5f)
-                setTextColor(android.graphics.Color.parseColor("#262D39"))
+                setTextColor(android.graphics.Color.parseColor("#1E293B"))
                 markwon.setMarkdown(this, text)
             }
         },
diff --git a/android/app/src/main/java/com/dadao/task/ui/RichTextEditorScreen.kt b/android/app/src/main/java/com/dadao/task/ui/RichTextEditorScreen.kt
index 0fbbd67..e8b7a7e 100644
--- a/android/app/src/main/java/com/dadao/task/ui/RichTextEditorScreen.kt
+++ b/android/app/src/main/java/com/dadao/task/ui/RichTextEditorScreen.kt
@@ -350,7 +350,7 @@ private fun PreviewBody(
                         textSize = 15f
                         setPadding(0, 0, 0, 0)
                         setLineSpacing(0f, 1.5f)
-                        setTextColor(android.graphics.Color.parseColor("#4E5867"))
+                        setTextColor(android.graphics.Color.parseColor("#475569"))
                         markwon.setMarkdown(this, text)
                     }
                 },
diff --git a/android/app/src/main/java/com/dadao/task/ui/Theme.kt b/android/app/src/main/java/com/dadao/task/ui/Theme.kt
index d9d5fec..6da015f 100644
--- a/android/app/src/main/java/com/dadao/task/ui/Theme.kt
+++ b/android/app/src/main/java/com/dadao/task/ui/Theme.kt
@@ -13,22 +13,22 @@ import androidx.compose.ui.unit.dp
 import androidx.compose.ui.unit.sp
 
 /**
- * 与 Web 端 tailwind.config.js 同一套色板：暖白纸面 + 景泰蓝主色 + 陶土橙强调。
+ * 与 Web 端 tailwind.config.js 同一套色板：冷白纸面 + 靛蓝主色（#4F46E5）+ 陶土橙强调。
  * 两端看同一张截图时，颜色应该能对上，所以这里的值不要单独调。
  */
-val Paper = Color(0xFFF9FAFC)
-val PaperSunken = Color(0xFFF3F5F9)
-val Line = Color(0xFFE2E6EC)
-val LineStrong = Color(0xFFD3D9E1)
+val Paper = Color(0xFFFAFAFC)
+val PaperSunken = Color(0xFFF4F5F9)
+val Line = Color(0xFFE3E7EF)
+val LineStrong = Color(0xFFD5DAE4)
 
-val Ink = Color(0xFF262D39)
-val InkSoft = Color(0xFF4E5867)
-val InkMuted = Color(0xFF5F6B7C)
+val Ink = Color(0xFF1E293B)
+val InkSoft = Color(0xFF475569)
+val InkMuted = Color(0xFF64748B)
 
-val Primary = Color(0xFF274B73)
-val PrimaryDeep = Color(0xFF1F3B5B)
-val PrimarySoft = Color(0xFFDCE9F7)
-val PrimaryTint = Color(0xFFB9D3EC)
+val Primary = Color(0xFF4F46E5)
+val PrimaryDeep = Color(0xFF4338CA)
+val PrimarySoft = Color(0xFFE0E7FF)
+val PrimaryTint = Color(0xFFC7D2FE)
 
 val Clay = Color(0xFFC2703D)
 val ClaySoft = Color(0xFFFBEADF)
@@ -39,7 +39,7 @@ val Wheat = Color(0xFFA97C25)
 val WheatSoft = Color(0xFFF8EED7)
 val Rust = Color(0xFFB04A32)
 val RustSoft = Color(0xFFFBE5DF)
-val Sky = Color(0xFF1E7F94)
+val Sky = Color(0xFF16697C)
 val SkySoft = Color(0xFFE6F4F6)
 
 private val colors = lightColorScheme(
diff --git a/android/app/src/main/res/drawable/ic_launcher_foreground.xml b/android/app/src/main/res/drawable/ic_launcher_foreground.xml
index 79103c1..aa20e88 100644
--- a/android/app/src/main/res/drawable/ic_launcher_foreground.xml
+++ b/android/app/src/main/res/drawable/ic_launcher_foreground.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<!-- 自适应图标前景：与 Web Logo 同一套比例（108 画布，安全区 66 居中） -->
+<!-- 自适应图标前景：与 Web Logo 同一套比例（108 画布，安全区 66 居中；靛蓝底上的白线与淡紫点） -->
 <vector xmlns:android="http://schemas.android.com/apk/res/android"
     android:width="108dp"
     android:height="108dp"
@@ -7,20 +7,20 @@
     android:viewportHeight="108">
     <path
         android:pathData="M36.3,42.6 L71.7,42.6"
-        android:strokeColor="#EAF3FB"
+        android:strokeColor="#FFFFFF"
         android:strokeWidth="5.06"
         android:strokeLineCap="round" />
     <path
         android:pathData="M36.3,54 L59.6,54"
-        android:strokeColor="#EAF3FB"
+        android:strokeColor="#FFFFFF"
         android:strokeWidth="5.06"
         android:strokeLineCap="round" />
     <path
         android:pathData="M36.3,65.4 L50.8,65.4"
-        android:strokeColor="#EAF3FB"
+        android:strokeColor="#FFFFFF"
         android:strokeWidth="5.06"
         android:strokeLineCap="round" />
     <path
-        android:fillColor="#5CA8E8"
+        android:fillColor="#C7D2FE"
         android:pathData="M71.7,65.4 m-7.6,0 a7.6,7.6 0 1,0 15.2,0 a7.6,7.6 0 1,0 -15.2,0" />
 </vector>
diff --git a/android/app/src/main/res/values/colors.xml b/android/app/src/main/res/values/colors.xml
index 19681ca..7b62310 100644
--- a/android/app/src/main/res/values/colors.xml
+++ b/android/app/src/main/res/values/colors.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <resources>
-    <!-- 与 Web 端 Logo（web/src/components/icons.tsx 的 <Logo/>）同一个景泰蓝 -->
-    <color name="ic_launcher_background">#274B73</color>
+    <!-- 与 Web 端 Logo（web/src/components/icons.tsx 的 <Logo/>）同一个靛蓝 -->
+    <color name="ic_launcher_background">#4F46E5</color>
 </resources>
diff --git a/android/app/src/main/res/values/themes.xml b/android/app/src/main/res/values/themes.xml
index a12cb34..2fcf991 100644
--- a/android/app/src/main/res/values/themes.xml
+++ b/android/app/src/main/res/values/themes.xml
@@ -2,7 +2,7 @@
 <resources>
     <!-- Compose 自己管配色，这里只提供无 ActionBar 的容器主题 -->
     <style name="Theme.DadaoTask" parent="android:Theme.Material.Light.NoActionBar">
-        <item name="android:statusBarColor">#274B73</item>
-        <item name="android:windowBackground">#F9FAFC</item>
+        <item name="android:statusBarColor">#4F46E5</item>
+        <item name="android:windowBackground">#FAFAFC</item>
     </style>
 </resources>
diff --git a/tools/make-icons.py b/tools/make-icons.py
index 3c07cb8..86763b5 100644
--- a/tools/make-icons.py
+++ b/tools/make-icons.py
@@ -1,4 +1,4 @@
-"""按 Web Logo（icons.tsx 的 <Logo/>）重绘 PWA 图标：景泰蓝底 + 三条浅蓝白线 + 一点亮蓝。
+"""按 Web Logo（icons.tsx 的 <Logo/>）重绘 PWA 图标：靛蓝底 + 三条白线 + 一点淡紫。
 
 用法：python tools/make-icons.py
 输出覆盖 web/public/icons/*.png（与 SVG 同一套比例：64 画布，rx=18，线宽 4，点半径 6）。
@@ -13,9 +13,9 @@ from PIL import Image, ImageDraw
 ROOT = Path(__file__).resolve().parents[1]
 OUT = ROOT / "web" / "public" / "icons"
 
-BG = "#274B73"
-LINE = "#EAF3FB"
-DOT = "#5CA8E8"
+BG = "#4F46E5"
+LINE = "#FFFFFF"
+DOT = "#C7D2FE"
 
 SS = 8  # 超采样倍数，边缘才不毛
 
diff --git a/web/e2e/pwa.mjs b/web/e2e/pwa.mjs
index 80c5061..584b6b8 100644
--- a/web/e2e/pwa.mjs
+++ b/web/e2e/pwa.mjs
@@ -118,7 +118,7 @@ async function main() {
   check("页面骨架已预缓存", shellCached);
 
   const themeColor = await page.getAttribute('meta[name="theme-color"]', "content");
-  check("主题色是景泰蓝", themeColor === "#274b73", String(themeColor));
+  check("主题色是品牌靛蓝", themeColor === "#4f46e5", String(themeColor));
   check("桌面尺寸没有控制台报错", errors.length === 0, errors.join(" | "));
   await desktop.close();
 
diff --git a/web/index.html b/web/index.html
index b265564..8079865 100644
--- a/web/index.html
+++ b/web/index.html
@@ -5,13 +5,13 @@
     <meta name="viewport" content="width=device-width, initial-scale=1.0, viewport-fit=cover" />
     <title>达道Task</title>
     <meta name="description" content="达道Task：任务、工单、知识库，一条道走到底" />
-    <!-- 和 App 内左上角、安卓桌面同一枚图标：三段浅蓝白线 + 一点亮蓝 -->
+    <!-- 和 App 内左上角、安卓桌面同一枚图标：靛蓝底 + 三条白线 + 一点淡紫 -->
     <link
       rel="icon"
-      href="data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 64 64'%3E%3Crect width='64' height='64' rx='18' fill='%23274B73'/%3E%3Cg stroke='%23EAF3FB' stroke-width='4' stroke-linecap='round'%3E%3Cpath d='M18 23h28'/%3E%3Cpath d='M18 32h19'/%3E%3Cpath d='M18 41h12'/%3E%3C/g%3E%3Ccircle cx='46' cy='41' r='6' fill='%235CA8E8'/%3E%3C/svg%3E"
+      href="data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 64 64'%3E%3Crect width='64' height='64' rx='18' fill='%234F46E5'/%3E%3Cg stroke='%23FFFFFF' stroke-width='4' stroke-linecap='round'%3E%3Cpath d='M18 23h28'/%3E%3Cpath d='M18 32h19'/%3E%3Cpath d='M18 41h12'/%3E%3C/g%3E%3Ccircle cx='46' cy='41' r='6' fill='%23C7D2FE'/%3E%3C/svg%3E"
     />
     <!-- 装到手机主屏之后：状态栏跟品牌色走，iOS 用不透明底图 -->
-    <meta name="theme-color" content="#274b73" />
+    <meta name="theme-color" content="#4f46e5" />
     <link rel="apple-touch-icon" href="/icons/apple-touch-icon.png" />
     <meta name="apple-mobile-web-app-capable" content="yes" />
     <meta name="apple-mobile-web-app-title" content="达道Task" />
diff --git a/web/public/icons/apple-touch-icon.png b/web/public/icons/apple-touch-icon.png
index 2610586..75251bb 100644
Binary files a/web/public/icons/apple-touch-icon.png and b/web/public/icons/apple-touch-icon.png differ
diff --git a/web/public/icons/icon-192.png b/web/public/icons/icon-192.png
index 1cf1a9b..cd9b613 100644
Binary files a/web/public/icons/icon-192.png and b/web/public/icons/icon-192.png differ
diff --git a/web/public/icons/icon-512.png b/web/public/icons/icon-512.png
index 82bbb62..0bb77ab 100644
Binary files a/web/public/icons/icon-512.png and b/web/public/icons/icon-512.png differ
diff --git a/web/public/icons/maskable-512.png b/web/public/icons/maskable-512.png
index 12d3fff..f0496ad 100644
Binary files a/web/public/icons/maskable-512.png and b/web/public/icons/maskable-512.png differ
diff --git a/web/src/components/icons.tsx b/web/src/components/icons.tsx
index 241bd03..2db712c 100644
--- a/web/src/components/icons.tsx
+++ b/web/src/components/icons.tsx
@@ -290,13 +290,13 @@ export const Spinner = ({ size = 16, className = "" }: { size?: number; classNam
 
 export const Logo = ({ size = 28 }: { size?: number }) => (
   <svg width={size} height={size} viewBox="0 0 32 32" aria-hidden>
-    <rect width="32" height="32" rx="9" fill="#274B73" />
+    <rect width="32" height="32" rx="9" fill="#4F46E5" />
     <path
       d="M9 11.5h14M9 16h9.5M9 20.5h6"
-      stroke="#EAF3FB"
+      stroke="#FFFFFF"
       strokeWidth="2"
       strokeLinecap="round"
     />
-    <circle cx="23" cy="20.5" r="3" fill="#5CA8E8" />
+    <circle cx="23" cy="20.5" r="3" fill="#C7D2FE" />
   </svg>
 );
diff --git a/web/src/index.css b/web/src/index.css
index e89394f..4e3d6a0 100644
--- a/web/src/index.css
+++ b/web/src/index.css
@@ -72,7 +72,7 @@
       disabled:pointer-events-none disabled:opacity-40;
   }
   .btn-primary {
-    @apply btn bg-primary-700 text-white shadow-sm hover:bg-primary-800 active:translate-y-px;
+    @apply btn bg-primary-600 text-white shadow-sm hover:bg-primary-700 active:translate-y-px;
   }
   .btn-ghost {
     @apply btn border border-line-200 bg-white text-ink-700 hover:border-line-300 hover:bg-paper-50;
@@ -157,8 +157,8 @@
     scrollbar-width: none;
   }
   .grid-lines {
-    background-image: linear-gradient(to right, rgba(22, 28, 26, 0.04) 1px, transparent 1px),
-      linear-gradient(to bottom, rgba(22, 28, 26, 0.04) 1px, transparent 1px);
+    background-image: linear-gradient(to right, rgba(15, 23, 42, 0.04) 1px, transparent 1px),
+      linear-gradient(to bottom, rgba(15, 23, 42, 0.04) 1px, transparent 1px);
     background-size: 32px 32px;
   }
 }
@@ -443,6 +443,6 @@
 .rich-text .vditor-hint {
   border-color: theme("colors.line.200");
   border-radius: 10px;
-  box-shadow: 0 12px 32px -12px rgba(31, 42, 40, 0.28);
+  box-shadow: 0 12px 32px -12px rgba(15, 23, 42, 0.28);
   font-size: 0.8rem;
 }
\ No newline at end of file
diff --git a/web/src/pages/Workspace.tsx b/web/src/pages/Workspace.tsx
index 6d2627a..2951388 100644
--- a/web/src/pages/Workspace.tsx
+++ b/web/src/pages/Workspace.tsx
@@ -157,7 +157,7 @@ export function WorkspacePage() {
                     <span
                       className={`pill ${
                         m.role === "owner"
-                          ? "bg-primary-700 text-white"
+                          ? "bg-primary-600 text-white"
                           : m.role === "admin"
                             ? "bg-primary-50 text-primary-700"
                             : "bg-paper-200 text-ink-600"
diff --git a/web/tailwind.config.js b/web/tailwind.config.js
index 63dd1c8..09125ad 100644
--- a/web/tailwind.config.js
+++ b/web/tailwind.config.js
@@ -4,44 +4,44 @@ export default {
   theme: {
     extend: {
       colors: {
-        // 底色：暖白纸面，不用纯白，避免刺眼、也让卡片有层次
+        // 底色：近白的冷调纸面，不用纯白，避免刺眼、也让卡片有层次
         paper: {
-          50: "#F9FAFC",
-          100: "#F3F5F9",
-          200: "#E9EDF3",
-          300: "#DFE5ED",
+          50: "#FAFAFC",
+          100: "#F4F5F9",
+          200: "#EBEDF3",
+          300: "#E0E4EC",
         },
-        // 分隔线与描边（冷灰，跟蓝主色同一个中性轴）
+        // 分隔线与描边（冷灰，跟靛蓝同一个中性轴）
         line: {
-          100: "#EDEFF3",
-          200: "#E2E6EC",
-          300: "#D3D9E1",
+          100: "#EEF0F5",
+          200: "#E3E7EF",
+          300: "#D5DAE4",
         },
-        // 文字与中性
+        // 文字与中性（Slate 轴：比纯灰更冷一点，和靛蓝同屏不打架）
         ink: {
           50: "#F6F8FA",
           100: "#E9EEF3",
           200: "#D7DEE7",
           300: "#B8C2CE",
-          400: "#929EAD",
-          500: "#5F6B7C",
-          600: "#4E5867",
-          700: "#3A4352",
-          800: "#262D39",
-          900: "#161C25",
+          400: "#94A3B8",
+          500: "#64748B",
+          600: "#475569",
+          700: "#334155",
+          800: "#1E293B",
+          900: "#0F172A",
         },
-        // 主色：景泰蓝（沉一点的靛蓝），克制、有"工作台"气质，避开任务工具常见的荧光蓝
+        // 主色：靛蓝 #4F46E5（Indigo 600）。饱和度足、明度高，压在按钮/链接/选中态上不发灰。
         primary: {
-          50: "#EFF5FB",
-          100: "#DCE9F7",
-          200: "#B9D3EC",
-          300: "#8FB6DD",
-          400: "#6094C8",
-          500: "#3E76AC",
-          600: "#2E5D8D",
-          700: "#274B73",
-          800: "#1F3B5B",
-          900: "#1A2F48",
+          50: "#EEF2FF",
+          100: "#E0E7FF",
+          200: "#C7D2FE",
+          300: "#A5B4FC",
+          400: "#818CF8",
+          500: "#6366F1",
+          600: "#4F46E5",
+          700: "#4338CA",
+          800: "#3730A3",
+          900: "#312E81",
         },
         // 强调色：陶土橙，只用在"需要人注意"的地方
         clay: {
@@ -59,8 +59,8 @@ export default {
         sage: { 500: "#2F7D5E", 50: "#EAF4EF" },
         wheat: { 500: "#A97C25", 50: "#F8F1E2" },
         rust: { 500: "#B04A32", 50: "#FAEDE9" },
-        // 信息色：往青绿方向拉开一档，和 primary 的「进行中」在同一屏里也能分清
-        sky: { 500: "#1E7F94", 50: "#E6F4F6" },
+        // 信息色：往青绿方向拉开一大档，和靛蓝主色在同一屏里一眼分得清
+        sky: { 500: "#16697C", 50: "#E6F4F6" },
       },
       fontFamily: {
         sans: [
@@ -94,8 +94,8 @@ export default {
         "3xl": "24px",
       },
       boxShadow: {
-        card: "0 1px 2px rgba(20,27,36,0.04), 0 8px 24px -16px rgba(20,27,36,0.35)",
-        pop: "0 2px 6px rgba(20,27,36,0.06), 0 20px 48px -24px rgba(20,27,36,0.35)",
+        card: "0 1px 2px rgba(15,23,42,0.04), 0 8px 24px -16px rgba(15,23,42,0.30)",
+        pop: "0 2px 6px rgba(15,23,42,0.06), 0 20px 48px -24px rgba(15,23,42,0.32)",
         inset: "inset 0 1px 0 rgba(255,255,255,0.6)",
       },
       keyframes: {
diff --git a/web/vite.config.ts b/web/vite.config.ts
index 03e55ff..f9c6ad3 100644
--- a/web/vite.config.ts
+++ b/web/vite.config.ts
@@ -22,8 +22,8 @@ export default defineConfig({
         scope: "/",
         display: "standalone",
         orientation: "any",
-        background_color: "#f3f5f9",
-        theme_color: "#274b73",
+        background_color: "#f4f5f9",
+        theme_color: "#4f46e5",
         categories: ["productivity", "business"],
         icons: [
           { src: "/icons/icon-192.png", sizes: "192x192", type: "image/png", purpose: "any" },