diff --git a/web/index.html b/web/index.html
index d41b389..7221c2b 100644
--- a/web/index.html
+++ b/web/index.html
@@ -36,7 +36,8 @@
     body {
       margin: 0;
       padding: 0;
-      background-color: #1a1a2e;
+      /* Match Flutter's dark theme scaffold background (FlexScheme.aquaBlue) */
+      background-color: #111111;
     }
   </style>
 </head>