diff --git a/source/less/_defines.less b/source/less/_defines.less
index e9e166a..2a54529 100755
--- a/source/less/_defines.less
+++ b/source/less/_defines.less
@@ -74,11 +74,11 @@
 // 网页背景
 @theme-bg-main: @theme-base-main;
 // 导航栏背景
-@theme-bg-nav-header: @theme-base-main;
+@theme-bg-nav-header: darken(@theme-base-main, 3%);
 // 卡片背景
 @theme-bg-card: white;
 // 卡片标题栏背景
-@theme-bg-card-header: @theme-base-main;
+@theme-bg-card-header: darken(@theme-base-main, 3%);
 // 按钮背景
 @theme-bg-button: @theme-base-main;
 // 代码的背景色 `code`