diff --git a/django/contrib/admin/static/admin/css/base.css b/django/contrib/admin/static/admin/css/base.css
index 224c787460..b3a9988f0d 100644
--- a/django/contrib/admin/static/admin/css/base.css
+++ b/django/contrib/admin/static/admin/css/base.css
@@ -76,6 +76,11 @@
     --hairline-color: #272727;
     --border-color: #353535;
 
+    --error-fg: #e35f5f;
+    --message-success-bg: #006b1b;
+    --message-warning-bg: #583305;
+    --message-error-bg: #570808;
+
     --darkened-bg: #212121;
     --selected-bg: #1b1b1b;
     --selected-row: #00363a;
diff --git a/django/contrib/admin/static/admin/css/nav_sidebar.css b/django/contrib/admin/static/admin/css/nav_sidebar.css
index a13d3b6fc9..3d3a7b4a69 100644
--- a/django/contrib/admin/static/admin/css/nav_sidebar.css
+++ b/django/contrib/admin/static/admin/css/nav_sidebar.css
@@ -91,7 +91,7 @@
 
 #nav-sidebar .current-app .section:link,
 #nav-sidebar .current-app .section:visited {
-    color: var(--selected-row);
+    color: var(--header-color);
     font-weight: bold;
 }