diff --git a/.changeset/dirty-foxes-cover.md b/.changeset/dirty-foxes-cover.md
new file mode 100644
index 000000000..a34ecb45a
--- /dev/null
+++ b/.changeset/dirty-foxes-cover.md
@@ -0,0 +1,5 @@
+---
+"@primer/primitives": major
+---
+
+Fix inconsistent HC transparent colors
diff --git a/.playwright/snapshots/storybook.test.ts-snapshots/storybook-all-color-swatches-dark-high-contrast-borderColor-closed-muted-linux.png b/.playwright/snapshots/storybook.test.ts-snapshots/storybook-all-color-swatches-dark-high-contrast-borderColor-closed-muted-linux.png
index d87cc3009..a1698feec 100644
Binary files a/.playwright/snapshots/storybook.test.ts-snapshots/storybook-all-color-swatches-dark-high-contrast-borderColor-closed-muted-linux.png and b/.playwright/snapshots/storybook.test.ts-snapshots/storybook-all-color-swatches-dark-high-contrast-borderColor-closed-muted-linux.png differ
diff --git a/.playwright/snapshots/storybook.test.ts-snapshots/storybook-all-color-swatches-dark-high-contrast-borderColor-upsell-muted-linux.png b/.playwright/snapshots/storybook.test.ts-snapshots/storybook-all-color-swatches-dark-high-contrast-borderColor-upsell-muted-linux.png
index 0bf14c7e6..86cebc0ee 100644
Binary files a/.playwright/snapshots/storybook.test.ts-snapshots/storybook-all-color-swatches-dark-high-contrast-borderColor-upsell-muted-linux.png and b/.playwright/snapshots/storybook.test.ts-snapshots/storybook-all-color-swatches-dark-high-contrast-borderColor-upsell-muted-linux.png differ
diff --git a/.playwright/snapshots/storybook.test.ts-snapshots/storybook-all-color-swatches-light-high-contrast-borderColor-closed-muted-linux.png b/.playwright/snapshots/storybook.test.ts-snapshots/storybook-all-color-swatches-light-high-contrast-borderColor-closed-muted-linux.png
index e1b93366e..176f7e789 100644
Binary files a/.playwright/snapshots/storybook.test.ts-snapshots/storybook-all-color-swatches-light-high-contrast-borderColor-closed-muted-linux.png and b/.playwright/snapshots/storybook.test.ts-snapshots/storybook-all-color-swatches-light-high-contrast-borderColor-closed-muted-linux.png differ
diff --git a/.playwright/snapshots/storybook.test.ts-snapshots/storybook-all-color-swatches-light-high-contrast-borderColor-upsell-muted-linux.png b/.playwright/snapshots/storybook.test.ts-snapshots/storybook-all-color-swatches-light-high-contrast-borderColor-upsell-muted-linux.png
index ca510f83a..b4c2599aa 100644
Binary files a/.playwright/snapshots/storybook.test.ts-snapshots/storybook-all-color-swatches-light-high-contrast-borderColor-upsell-muted-linux.png and b/.playwright/snapshots/storybook.test.ts-snapshots/storybook-all-color-swatches-light-high-contrast-borderColor-upsell-muted-linux.png differ
diff --git a/blob-report/report.zip b/blob-report/report.zip
index 9bb55b8b2..ca6032d57 100644
Binary files a/blob-report/report.zip and b/blob-report/report.zip differ
diff --git a/src/tokens/functional/color/dark/overrides/dark.high-contrast.json5 b/src/tokens/functional/color/dark/overrides/dark.high-contrast.json5
index 20bf218d5..a0acb451f 100644
--- a/src/tokens/functional/color/dark/overrides/dark.high-contrast.json5
+++ b/src/tokens/functional/color/dark/overrides/dark.high-contrast.json5
@@ -70,58 +70,24 @@
       },
     },
     accent: {
-      muted: {
-        $value: '{base.color.blue.5}',
-        $type: 'color',
-        alpha: 0.1,
-      },
       emphasis: {
         $value: '{base.color.blue.9}',
         $type: 'color',
       },
     },
     success: {
-      muted: {
-        $value: '{base.color.green.4}',
-        $type: 'color',
-        alpha: 0.14,
-      },
       emphasis: {
         $value: '{base.color.green.9}',
         $type: 'color',
       },
     },
-    open: {
-      muted: {
-        $value: '{bgColor.success.muted}',
-        $type: 'color',
-        alpha: 0.14,
-      },
-    },
     danger: {
-      muted: {
-        $value: '{base.color.red.4}',
-        $type: 'color',
-        alpha: 0.09,
-      },
       emphasis: {
         $value: '{base.color.red.9}',
         $type: 'color',
       },
     },
-    closed: {
-      muted: {
-        $value: '{bgColor.danger.muted}',
-        $type: 'color',
-        alpha: 0.09,
-      },
-    },
     severe: {
-      muted: {
-        $value: '{base.color.orange.4}',
-        $type: 'color',
-        alpha: 0.088,
-      },
       emphasis: {
         $value: '{base.color.orange.9}',
         $type: 'color',
@@ -134,29 +100,12 @@
       },
     },
     done: {
-      muted: {
-        $value: '{base.color.purple.5}',
-        $type: 'color',
-        alpha: 0.09,
-      },
       emphasis: {
         $value: '{base.color.purple.9}',
         $type: 'color',
       },
     },
-    upsell: {
-      muted: {
-        $value: '{bgColor.done.muted}',
-        $type: 'color',
-        alpha: 0.09,
-      },
-    },
     sponsors: {
-      muted: {
-        $value: '{base.color.pink.5}',
-        $type: 'color',
-        alpha: 0.09,
-      },
       emphasis: {
         $value: '{base.color.pink.9}',
         $type: 'color',
@@ -215,6 +164,20 @@
         alpha: 1,
       },
     },
+    closed: {
+      muted: {
+        $value: '{borderColor.danger.muted}',
+        $type: 'color',
+        alpha: 1,
+      },
+    },
+    upsell: {
+      muted: {
+          $value: '{borderColor.done.muted}',
+        $type: 'color',
+        alpha: 1,
+      },
+    },
     severe: {
       muted: {
         $value: '{base.color.orange.4}',
diff --git a/src/tokens/functional/color/light/overrides/light.high-contrast.json5 b/src/tokens/functional/color/light/overrides/light.high-contrast.json5
index f027d5e97..8fabd7472 100644
--- a/src/tokens/functional/color/light/overrides/light.high-contrast.json5
+++ b/src/tokens/functional/color/light/overrides/light.high-contrast.json5
@@ -171,6 +171,20 @@
         alpha: 1,
       },
     },
+    upsell: {
+      muted: {
+        $value: '{borderColor.done.muted}',
+        $type: 'color',
+        alpha: 1,
+      },
+    },
+    closed: {
+      muted: {
+        $value: '{borderColor.danger.muted}',
+        $type: 'color',
+        alpha: 1,
+      },
+    },
   },
   // patterns
   avatar: {