diff --git a/scripts/themes.config.ts b/scripts/themes.config.ts
index 0ecaf966e..9327c4bf5 100644
--- a/scripts/themes.config.ts
+++ b/scripts/themes.config.ts
@@ -34,6 +34,23 @@ export const themes: TokenBuildInput[] = [
       `src/tokens/base/color/light/display-light.json5`,
     ],
   },
+  {
+    filename: 'light-tritanopia-high-contrast',
+    theme: 'light-tritanopia-high-contrast',
+    source: [
+      `src/tokens/functional/shadow/shadow.json5`,
+      `src/tokens/functional/border/*.json5`,
+      `src/tokens/component/*.json5`,
+      `src/tokens/functional/color/*.json5`,
+      `src/tokens/functional/color/light/*.json5`,
+    ],
+    include: [
+      `src/tokens/functional/size/border.json5`,
+      `src/tokens/base/color/light/light.json5`,
+      `src/tokens/base/color/light/light.high-contrast.json5`,
+      `src/tokens/base/color/light/display-light.json5`,
+    ],
+  },
   {
     filename: 'light-colorblind',
     theme: 'light-protanopia-deuteranopia',
diff --git a/src/tokens/functional/color/bgColor.json5 b/src/tokens/functional/color/bgColor.json5
index 8e385b0b9..bbfccdb72 100644
--- a/src/tokens/functional/color/bgColor.json5
+++ b/src/tokens/functional/color/bgColor.json5
@@ -35,6 +35,7 @@
           dark: '{base.color.neutral.2}',
           'dark-dimmed': '{base.color.neutral.4}',
           'light-high-contrast': '{base.color.neutral.3}',
+          'light-tritanopia-high-contrast': '{base.color.neutral.3}',
           'dark-high-contrast': '{base.color.neutral.2}',
         },
       },
@@ -55,6 +56,7 @@
           dark: '{base.color.neutral.0}',
           'dark-dimmed': '{base.color.neutral.2}',
           'light-high-contrast': '{base.color.neutral.2}',
+          'light-tritanopia-high-contrast': '{base.color.neutral.2}',
         },
       },
     },
@@ -130,6 +132,7 @@
           dark: '{base.color.neutral.3}',
           'dark-dimmed': '{base.color.neutral.5}',
           'light-high-contrast': '{base.color.neutral.4}',
+          'light-tritanopia-high-contrast': '{base.color.neutral.4}',
           'dark-high-contrast': '{base.color.neutral.4}',
         },
       },
@@ -168,6 +171,7 @@
               alpha: 0.2,
             },
             'light-high-contrast': '{base.color.neutral.4}',
+            'light-tritanopia-high-contrast': '{base.color.neutral.4}',
             'dark-high-contrast': '{base.color.neutral.3}',
           },
         },
@@ -185,6 +189,7 @@
             dark: '{base.color.neutral.8}',
             'dark-dimmed': '{base.color.neutral.8}',
             'light-high-contrast': '{base.color.neutral.10}',
+            'light-tritanopia-high-contrast': '{base.color.neutral.10}',
             'dark-high-contrast': '{base.color.neutral.7}',
           },
         },
@@ -249,6 +254,7 @@
               alpha: 0.15,
             },
             'light-tritanopia': '{base.color.blue.0}',
+            'light-tritanopia-high-contrast': '{base.color.blue.0}',
             'dark-tritanopia': {
               $value: '{base.color.blue.4}',
               alpha: 0.15,
@@ -279,7 +285,7 @@
             'dark-tritanopia': '{base.color.blue.5}',
             'light-protanopia-deuteranopia': '{base.color.blue.5}',
             'dark-protanopia-deuteranopia': '{base.color.blue.5}',
-            'light-high-contrast': '{base.color.green.5}',
+            'light-high-contrast': '{base.color.blue.5}',
             'dark-high-contrast': '{base.color.green.9}',
           },
         },
@@ -299,6 +305,7 @@
             },
           },
           'org.primer.overrides': {
+            'light-tritanopia-high-contrast': '{base.color.red.0}',
             'light-tritanopia': '{base.color.red.0}',
             'dark-tritanopia': {
               $value: '{base.color.red.4}',
@@ -326,6 +333,7 @@
           },
           'org.primer.overrides': {
             'light-tritanopia': '{base.color.red.5}',
+            'light-tritanopia-high-contrast': '{base.color.red.5}',
             'dark-tritanopia': '{base.color.red.5}',
             'light-protanopia-deuteranopia': '{base.color.orange.5}',
             'dark-protanopia-deuteranopia': '{base.color.orange.5}',
@@ -391,6 +399,7 @@
               alpha: 0.1,
             },
             'light-tritanopia': '{base.color.red.0}',
+            'light-tritanopia-high-contrast': '{base.color.red.0}',
             'dark-tritanopia': {
               $value: '{base.color.red.4}',
               alpha: 0.1,
@@ -412,6 +421,7 @@
           },
           'org.primer.overrides': {
             'light-tritanopia': '{base.color.red.5}',
+            'light-tritanopia-high-contrast': '{base.color.red.5}',
             'dark-tritanopia': '{base.color.red.5}',
             'dark-high-contrast': '{base.color.orange.9}',
           },
@@ -479,6 +489,7 @@
           },
           'org.primer.overrides': {
             'light-tritanopia': '{bgColor.neutral.muted}',
+            'light-tritanopia-high-contrast': '{bgColor.neutral.muted}',
             'dark-tritanopia': {
               $value: '{bgColor.neutral.muted}',
               alpha: 0.1,
@@ -505,6 +516,7 @@
           },
           'org.primer.overrides': {
             'light-tritanopia': '{bgColor.neutral.emphasis}',
+            'light-tritanopia-high-contrast': '{bgColor.neutral.emphasis}',
             'dark-tritanopia': '{bgColor.neutral.emphasis}',
             'light-protanopia-deuteranopia': '{bgColor.neutral.emphasis}',
             'dark-protanopia-deuteranopia': '{bgColor.neutral.emphasis}',