diff --git a/lib/theme/seed_tokens.dart b/lib/theme/seed_tokens.dart
index 770d93c..a73f67c 100644
--- a/lib/theme/seed_tokens.dart
+++ b/lib/theme/seed_tokens.dart
@@ -110,10 +110,10 @@ class SeedScheme {
     onInk: Color(0xF5FFFFFF),
     onInkMuted: Color(0x99FFFFFF),
     onPrimary: Color(0xFFFFFFFF),
-    primary: Color(0xFF0066FF),
-    primaryHover: Color(0xFF005AE0),
-    primarySubtle: Color(0xFFE3EEFF),
-    primaryFg: Color(0xFF005AE0),
+    primary: Color(0xFF0F6E66),
+    primaryHover: Color(0xFF0D615A),
+    primarySubtle: Color(0xFFE5EFEE),
+    primaryFg: Color(0xFF0D615A),
   );
 
   static const SeedScheme dark = SeedScheme(
@@ -148,10 +148,10 @@ class SeedScheme {
     onInk: Color(0xF2FFFFFF),
     onInkMuted: Color(0x94FFFFFF),
     onPrimary: Color(0xFFFFFFFF),
-    primary: Color(0xFF0066FF),
-    primaryHover: Color(0xFF005AE0),
-    primarySubtle: Color(0xFF152F59),
-    primaryFg: Color(0xFF66A3FF),
+    primary: Color(0xFF0F6E66),
+    primaryHover: Color(0xFF0D615A),
+    primarySubtle: Color(0xFF193131),
+    primaryFg: Color(0xFF6FA8A3),
   );
 }
 
@@ -219,7 +219,7 @@ class SeedHues {
 
 /// 외부 출처 색(캘린더 소스 등).
 abstract final class SeedSource {
-  static const Color app = Color(0xFF0066FF);
+  static const Color app = Color(0xFF0F6E66);
   static const Color google = Color(0xFF34A853);
   static const Color apple = Color(0xFF111111);
   static const Color notion = Color(0xFF7B61FF);
diff --git a/lib/theme/tweaks.dart b/lib/theme/tweaks.dart
index 99fad81..9fa944e 100644
--- a/lib/theme/tweaks.dart
+++ b/lib/theme/tweaks.dart
@@ -13,12 +13,12 @@ class TweakSettings {
     this.dark = false,
   });
 
-  /// 프로토타입 기본 포인트 컬러(`#0066FF`).
-  static const int kDefaultPrimary = 0xFF0066FF;
+  /// 브랜드 기본 포인트 컬러 — 이서 틸(`#0F6E66`, ADR-0033 리브랜딩).
+  static const int kDefaultPrimary = 0xFF0F6E66;
 
-  /// 트윅 패널이 제공하는 포인트 컬러 선택지(daykit-app.jsx TweakColor).
+  /// 트윅 패널이 제공하는 포인트 컬러 선택지(기본 = 브랜드 틸).
   static const List<int> primaryOptions = <int>[
-    0xFF0066FF, // blue
+    0xFF0F6E66, // teal (브랜드)
     0xFF6541F2, // violet
     0xFF00BF40, // green
     0xFFFF6F3C, // orange