diff --git a/core/modules/system/system.theme.css b/core/modules/system/system.theme.css
index 0bbeaf6..5f24191 100644
--- a/core/modules/system/system.theme.css
+++ b/core/modules/system/system.theme.css
@@ -123,7 +123,7 @@ input.form-radio {
 }
 .marker,
 .form-required {
-  color: #f00;
+  color: #ee0000;
 }
 abbr.form-required, abbr.tabledrag-changed, abbr.ajax-changed {
   border-bottom: none;