diff --git a/packages/components/src/components/notification/_inline-notification.scss b/packages/components/src/components/notification/_inline-notification.scss
index f58bf988467d..d236f9b0f7e5 100644
--- a/packages/components/src/components/notification/_inline-notification.scss
+++ b/packages/components/src/components/notification/_inline-notification.scss
@@ -314,6 +314,10 @@
   .#{$prefix}--inline-notification__icon {
     @include high-contrast-mode('icon-fill');
   }
+
+  .#{$prefix}--inline-notification__close-icon {
+    @include high-contrast-mode('icon-fill');
+  }
   /* stylelint-enable */
 }
 
diff --git a/packages/components/src/components/notification/_toast-notification.scss b/packages/components/src/components/notification/_toast-notification.scss
index 2c4cf3d76b02..00391ed6a40f 100644
--- a/packages/components/src/components/notification/_toast-notification.scss
+++ b/packages/components/src/components/notification/_toast-notification.scss
@@ -237,12 +237,18 @@
   .#{$prefix}--toast-notification {
     @include high-contrast-mode('outline');
   }
+
   .#{$prefix}--toast-notification__close-button:focus {
     @include high-contrast-mode('focus');
   }
+
   .#{$prefix}--toast-notification__icon {
     @include high-contrast-mode('icon-fill');
   }
+
+  .#{$prefix}--inline-notification__close-icon {
+    @include high-contrast-mode('icon-fill');
+  }
   /* stylelint-enable */
 }