diff --git a/clj-e2e/test/logseq/e2e/right_sidebar_basic_test.clj b/clj-e2e/test/logseq/e2e/right_sidebar_basic_test.clj
new file mode 100644
index 0000000000..c2a054714c
--- /dev/null
+++ b/clj-e2e/test/logseq/e2e/right_sidebar_basic_test.clj
@@ -0,0 +1,45 @@
+(ns logseq.e2e.right-sidebar-basic-test
+  (:require
+   [clojure.string :as string]
+   [clojure.test :refer [deftest is testing use-fixtures]]
+   [logseq.e2e.assert :as assert]
+   [logseq.e2e.fixtures :as fixtures]
+   [logseq.e2e.util :as util]
+   [wally.main :as w]))
+
+(use-fixtures :once fixtures/open-page)
+(use-fixtures :each fixtures/new-logseq-page fixtures/validate-graph)
+
+(defn- use-dark-neutral-theme!
+  []
+  (w/eval-js
+   "window.logseq.api.set_theme_mode('dark');
+    window.logseq.api.set_state_from_store(['ui/system-theme?'], false);
+    window.logseq.api.set_state_from_store(['ui/radix-color'], 'none');")
+  (util/wait-timeout 100))
+
+(defn- right-sidebar-backgrounds
+  []
+  (-> (w/eval-js
+       "(() => {
+          const topbar = document.querySelector('.cp__right-sidebar-topbar');
+          const inner = document.querySelector('.cp__right-sidebar-inner');
+          return [
+            getComputedStyle(topbar).backgroundColor,
+            getComputedStyle(inner).backgroundColor,
+            document.documentElement.dataset.theme,
+            document.documentElement.dataset.color
+          ].join('|');
+        })()")
+      (string/split #"\|")))
+
+(deftest right-sidebar-topbar-uses-dark-neutral-background
+  (testing "right sidebar header stays dark with neutral accent color"
+    (use-dark-neutral-theme!)
+    (w/click ".toggle-right-sidebar")
+    (assert/assert-is-visible ".cp__right-sidebar.open .cp__right-sidebar-topbar")
+    (assert/assert-is-visible ".cp__right-sidebar .sidebar-item")
+    (let [[topbar-bg inner-bg theme color] (right-sidebar-backgrounds)]
+      (is (= "dark" theme))
+      (is (= "none" color))
+      (is (= inner-bg topbar-bg)))))
diff --git a/src/main/frontend/components/container.css b/src/main/frontend/components/container.css
index 963cba43c7..69ade90a60 100644
--- a/src/main/frontend/components/container.css
+++ b/src/main/frontend/components/container.css
@@ -777,8 +777,13 @@ html[data-theme='dark'] {
   }
 
   .cp__right-sidebar {
+    &-inner,
+    &-topbar {
+      background-color: var(--lx-gray-02, var(--ls-secondary-background-color, var(--rx-gray-01)));
+    }
+
     .sidebar-item {
-      background-color: var(--lx-gray-03, var(--ls-secondary-background-color));
+      background-color: var(--lx-gray-03, var(--ls-secondary-background-color, var(--rx-gray-03)));
     }
   }
 }