diff --git a/Justfile b/Justfile
index 38f36be..142b5fb 100644
--- a/Justfile
+++ b/Justfile
@@ -5,7 +5,7 @@
 format:
     treefmt
     just --fmt --unstable
-    prettier src/*.mjs --write
+    prettier src/*.mjs src/*.postcss --write
 
 format-dist:
     prettier dist/*.css --write
diff --git a/src/theme.postcss b/src/theme.postcss
index ed1d00e..c08e322 100644
--- a/src/theme.postcss
+++ b/src/theme.postcss
@@ -7,6 +7,14 @@
   @mixin theme 9, 1;
 }
 
+[data-prefers-contrast="more"] {
+  @mixin theme 9, 0;
+}
+
+[data-prefers-contrast="less"] {
+  @mixin theme 9, 2;
+}
+
 @media (prefers-color-scheme: light) {
   :root {
     @mixin theme 9, 1;
@@ -17,6 +25,14 @@
   :root {
     @mixin theme 0, 8;
   }
+
+  [data-prefers-contrast="more"] {
+    @mixin theme 0, 9;
+  }
+
+  [data-prefers-contrast="less"] {
+    @mixin theme 0, 7;
+  }
 }
 
 [data-prefers-color-scheme="light"] {