diff --git a/core/ui/src/main/kotlin/com/afternote/core/ui/calendar/BottomSheetCalendar.kt b/core/ui/src/main/kotlin/com/afternote/core/ui/calendar/BottomSheetCalendar.kt
index f413e2262..d18a8600e 100644
--- a/core/ui/src/main/kotlin/com/afternote/core/ui/calendar/BottomSheetCalendar.kt
+++ b/core/ui/src/main/kotlin/com/afternote/core/ui/calendar/BottomSheetCalendar.kt
@@ -68,7 +68,8 @@ fun BottomSheetCalendar(
                         .width(36.dp)
                         .height(4.dp)
                         .clip(CircleShape)
-                        .background(Color(0xFFDDDDDD)),
+                        // 근사 토큰: 원본 #DDDDDD → 최근접 gray3(#E0E0E0, 채널당 +3)
+                        .background(AfternoteDesign.colors.gray3),
             )
         },
     ) {
@@ -141,7 +142,8 @@ fun DatePickerContent(
                 Modifier
                     .fillMaxWidth()
                     .background(
-                        color = Color(0xFFF5F5F5),
+                        // 근사 토큰: 원본 #F5F5F5 → 최근접 gray1(#FAFAFA, 채널당 +5)
+                        color = AfternoteDesign.colors.gray1,
                         shape = RoundedCornerShape(12.dp),
                     ).padding(horizontal = 16.dp, vertical = 18.dp),
         ) {
@@ -156,7 +158,7 @@ fun DatePickerContent(
 
         OutlinedCard(
             colors = CardDefaults.cardColors(containerColor = Color.White),
-            border = BorderStroke(1.dp, Color(0xFF000000).copy(alpha = 0.05f)),
+            border = BorderStroke(1.dp, AfternoteDesign.colors.black.copy(alpha = 0.05f)),
             modifier = Modifier.fillMaxWidth(),
         ) {
             Column(modifier = Modifier.padding(vertical = 16.dp)) {
@@ -202,7 +204,7 @@ fun DatePickerContent(
                         Text(
                             text = label,
                             modifier = Modifier.weight(1f),
-                            color = Color(0xFF000000).copy(alpha = 0.3f),
+                            color = AfternoteDesign.colors.black.copy(alpha = 0.3f),
                             style = AfternoteDesign.typography.footnoteCaption,
                             textAlign = TextAlign.Center,
                         )
@@ -249,8 +251,10 @@ fun PickerDayCell(
         return
     }
 
-    val bgColor = if (model.isSelected) Color(0xFF1A1A1A) else Color.Transparent
-    val textColor = if (model.isSelected) Color.White else Color(0xFF888888)
+    // 근사 토큰: 선택 셀 bg 원본 #1A1A1A → gray9(#212121, 채널당 +7)
+    val bgColor = if (model.isSelected) AfternoteDesign.colors.gray9 else Color.Transparent
+    // 근사 토큰: 미선택 텍스트 원본 #888888 → gray6(#757575, 채널당 -19). 토큰화 7곳 중 시각 차 가장 큼.
+    val textColor = if (model.isSelected) AfternoteDesign.colors.white else AfternoteDesign.colors.gray6
 
     Box(
         modifier =
diff --git a/core/ui/src/main/kotlin/com/afternote/core/ui/theme/Color.kt b/core/ui/src/main/kotlin/com/afternote/core/ui/theme/Color.kt
index 67e5834fd..ade43cf43 100644
--- a/core/ui/src/main/kotlin/com/afternote/core/ui/theme/Color.kt
+++ b/core/ui/src/main/kotlin/com/afternote/core/ui/theme/Color.kt
@@ -8,7 +8,7 @@ import androidx.compose.ui.graphics.Color
 
 private val White = Color(0xFFFFFFFF)
 
-private val Black = Color(0xFF000000)
+internal val Black = Color(0xFF000000)
 
 private val IconBk = Color(0xFF000000).copy(alpha = 0.6F)
 
diff --git a/core/ui/src/main/kotlin/com/afternote/core/ui/theme/Shadow.kt b/core/ui/src/main/kotlin/com/afternote/core/ui/theme/Shadow.kt
index f864d1503..d89dab243 100644
--- a/core/ui/src/main/kotlin/com/afternote/core/ui/theme/Shadow.kt
+++ b/core/ui/src/main/kotlin/com/afternote/core/ui/theme/Shadow.kt
@@ -1,6 +1,5 @@
 package com.afternote.core.ui.theme
 
-import androidx.compose.ui.graphics.Color
 import androidx.compose.ui.graphics.shadow.Shadow
 import androidx.compose.ui.unit.DpOffset
 import androidx.compose.ui.unit.dp
@@ -9,14 +8,14 @@ val toggleShadow_1: Shadow =
     Shadow(
         radius = 3.dp,
         spread = 0.dp,
-        color = Color(0xFF000000).copy(alpha = 0.1f),
+        color = Black.copy(alpha = 0.1f),
         offset = DpOffset(x = 0.dp, 1.dp),
     )
 
 val toggleShadow_2: Shadow =
     Shadow(
         radius = 2.dp,
-        spread = -1.dp,
-        color = Color(0xFF000000).copy(alpha = 0.1f),
+        spread = (-1).dp,
+        color = Black.copy(alpha = 0.1f),
         offset = DpOffset(x = 0.dp, 1.dp),
     )
diff --git a/feature/onboarding/presentation/src/main/java/com/afternote/feature/onboarding/presentation/login/LoginScreen.kt b/feature/onboarding/presentation/src/main/java/com/afternote/feature/onboarding/presentation/login/LoginScreen.kt
index 74e6bffd9..ecc4a8053 100644
--- a/feature/onboarding/presentation/src/main/java/com/afternote/feature/onboarding/presentation/login/LoginScreen.kt
+++ b/feature/onboarding/presentation/src/main/java/com/afternote/feature/onboarding/presentation/login/LoginScreen.kt
@@ -261,8 +261,8 @@ private fun SocialLoginGroup(
             contentPadding = PaddingValues(12.dp),
             colors =
                 ButtonDefaults.outlinedButtonColors(
-                    // 💡 주의: 0xF2F2F2 앞에 투명도(FF)를 붙여야 색상이 정상적으로 보입니다.
-                    containerColor = Color(0xFFF2F2F2),
+                    // 근사 토큰: 원본 #F2F2F2 → 최근접 gray2(#EEEEEE, 채널당 -4)
+                    containerColor = AfternoteDesign.colors.gray2,
                     contentColor = AfternoteDesign.colors.gray8,
                 ),
             border = BorderStroke(1.dp, AfternoteDesign.colors.gray3),
diff --git a/feature/onboarding/presentation/src/screenshotTestDebug/reference/com/afternote/feature/onboarding/presentation/login/LoginScreenScreenshotTestKt/loginScreenInitialScreenshot_748aa731_0.png b/feature/onboarding/presentation/src/screenshotTestDebug/reference/com/afternote/feature/onboarding/presentation/login/LoginScreenScreenshotTestKt/loginScreenInitialScreenshot_748aa731_0.png
index 40939ae01..80cf04275 100644
Binary files a/feature/onboarding/presentation/src/screenshotTestDebug/reference/com/afternote/feature/onboarding/presentation/login/LoginScreenScreenshotTestKt/loginScreenInitialScreenshot_748aa731_0.png and b/feature/onboarding/presentation/src/screenshotTestDebug/reference/com/afternote/feature/onboarding/presentation/login/LoginScreenScreenshotTestKt/loginScreenInitialScreenshot_748aa731_0.png differ