diff --git a/index.html b/index.html
index 789c105b..60f6c751 100644
--- a/index.html
+++ b/index.html
@@ -65,7 +65,7 @@
       loadSidebar: 'SUMMARY.md',
       name: 'AILearning',
       auto2top: true,
-      themeColor: '#1E90FF',
+      themeColor: '#004eb7',
       repo: 'apachecn/ailearning',
       plugins: [window.docsPlugin],
       alias: {