diff --git a/core/ui/src/main/kotlin/com/afternote/core/ui/AfternoteFieldContainer.kt b/core/ui/src/main/kotlin/com/afternote/core/ui/AfternoteFieldContainer.kt
index b148abfe..ae50994e 100644
--- a/core/ui/src/main/kotlin/com/afternote/core/ui/AfternoteFieldContainer.kt
+++ b/core/ui/src/main/kotlin/com/afternote/core/ui/AfternoteFieldContainer.kt
@@ -27,6 +27,10 @@ import com.afternote.core.ui.theme.AfternoteTheme
  *
  * [onClick] 을 주면 ripple 이 둥근 코너 안쪽으로 잘리도록 `clip` 뒤에 `clickable` 이 걸린다.
  *
+ * [enabled] 가 false 면 클릭이 차단될 뿐 아니라 배경이 흰색→gray2, 보더가 gray2→gray3 로 바뀌어
+ * 비활성 상태가 시각적으로 드러난다 (비활성 버튼 `AfternoteButtonType.Un` 과 동일 팔레트). 내부 [content]
+ * 의 색은 슬롯 주입이라 호출부가 상태에 맞춰 결정한다.
+ *
  * 폭 / 크기 정책은 호출부가 [modifier] 로 결정 (Compose API 가이드라인: element function 의 modifier
  * default 는 빈 `Modifier`). 부모 폭 차지가 필요하면 `Modifier.fillMaxWidth()`, Row 안에서
  * 가변 비율이면 `Modifier.weight(...)` 등을 명시적으로 넘긴다.
@@ -39,12 +43,14 @@ fun AfternoteFieldContainer(
     enabled: Boolean = true,
     content: @Composable RowScope.() -> Unit,
 ) {
+    val backgroundColor = if (enabled) AfternoteDesign.colors.white else AfternoteDesign.colors.gray2
+    val borderColor = if (enabled) AfternoteDesign.colors.gray2 else AfternoteDesign.colors.gray3
     Row(
         modifier =
             modifier
                 .clip(RoundedCornerShape(8.dp))
-                .background(AfternoteDesign.colors.white)
-                .border(1.dp, AfternoteDesign.colors.gray2, RoundedCornerShape(8.dp))
+                .background(backgroundColor)
+                .border(1.dp, borderColor, RoundedCornerShape(8.dp))
                 .then(
                     if (onClick != null) {
                         Modifier.clickable(enabled = enabled, onClick = onClick)
diff --git a/core/ui/src/screenshotTest/kotlin/com/afternote/core/ui/AfternoteFieldContainerScreenshotTest.kt b/core/ui/src/screenshotTest/kotlin/com/afternote/core/ui/AfternoteFieldContainerScreenshotTest.kt
new file mode 100644
index 00000000..8217a982
--- /dev/null
+++ b/core/ui/src/screenshotTest/kotlin/com/afternote/core/ui/AfternoteFieldContainerScreenshotTest.kt
@@ -0,0 +1,60 @@
+package com.afternote.core.ui
+
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.padding
+import androidx.compose.material3.Text
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.tooling.preview.Preview
+import androidx.compose.ui.unit.dp
+import com.afternote.core.ui.theme.AfternoteDesign
+import com.afternote.core.ui.theme.AfternoteTheme
+import com.android.tools.screenshot.PreviewTest
+
+/**
+ * [AfternoteFieldContainer] 의 시각 회귀 baseline — enabled / disabled 두 상태 (이슈 #342).
+ *
+ * disabled 일 때 배경(흰색→gray2)·보더(gray2→gray3) 가 비활성 색으로 전환되는지 고정한다.
+ * 의도된 시각 변경 시 `./gradlew :core:ui:updateScreenshotTest` 로 baseline 갱신.
+ */
+@PreviewTest
+@Preview(showBackground = true)
+@Composable
+internal fun afternoteFieldContainerEnabledScreenshot() {
+    AfternoteTheme {
+        AfternoteFieldContainer(
+            onClick = {},
+            enabled = true,
+            modifier =
+                Modifier
+                    .padding(16.dp)
+                    .fillMaxWidth(),
+        ) {
+            Text(
+                text = "활성 필드",
+                style = AfternoteDesign.typography.bodyLargeR,
+            )
+        }
+    }
+}
+
+@PreviewTest
+@Preview(showBackground = true)
+@Composable
+internal fun afternoteFieldContainerDisabledScreenshot() {
+    AfternoteTheme {
+        AfternoteFieldContainer(
+            onClick = {},
+            enabled = false,
+            modifier =
+                Modifier
+                    .padding(16.dp)
+                    .fillMaxWidth(),
+        ) {
+            Text(
+                text = "비활성 필드",
+                style = AfternoteDesign.typography.bodyLargeR,
+            )
+        }
+    }
+}
diff --git a/core/ui/src/screenshotTestDebug/reference/com/afternote/core/ui/AfternoteFieldContainerScreenshotTestKt/afternoteFieldContainerDisabledScreenshot_748aa731_0.png b/core/ui/src/screenshotTestDebug/reference/com/afternote/core/ui/AfternoteFieldContainerScreenshotTestKt/afternoteFieldContainerDisabledScreenshot_748aa731_0.png
new file mode 100644
index 00000000..ae6a24c4
Binary files /dev/null and b/core/ui/src/screenshotTestDebug/reference/com/afternote/core/ui/AfternoteFieldContainerScreenshotTestKt/afternoteFieldContainerDisabledScreenshot_748aa731_0.png differ
diff --git a/core/ui/src/screenshotTestDebug/reference/com/afternote/core/ui/AfternoteFieldContainerScreenshotTestKt/afternoteFieldContainerEnabledScreenshot_748aa731_0.png b/core/ui/src/screenshotTestDebug/reference/com/afternote/core/ui/AfternoteFieldContainerScreenshotTestKt/afternoteFieldContainerEnabledScreenshot_748aa731_0.png
new file mode 100644
index 00000000..437e36f9
Binary files /dev/null and b/core/ui/src/screenshotTestDebug/reference/com/afternote/core/ui/AfternoteFieldContainerScreenshotTestKt/afternoteFieldContainerEnabledScreenshot_748aa731_0.png differ