diff --git a/src/assets/style/theme/tomorrow-night-blue/setting.scss b/src/assets/style/theme/tomorrow-night-blue/setting.scss
index 0937327c..7d50e826 100644
--- a/src/assets/style/theme/tomorrow-night-blue/setting.scss
+++ b/src/assets/style/theme/tomorrow-night-blue/setting.scss
@@ -14,7 +14,7 @@ $theme-multiple-page-control-color: #FFF;
 $theme-multiple-page-control-color-active: $color-text-normal;
 $theme-multiple-page-control-border-color: #002253;
 $theme-multiple-page-control-border-color-active: #F7FAFC;
-$theme-multiple-page-control-background-color: rgba(#FFF, .5);
+$theme-multiple-page-control-background-color: rgba(#FFF, .2);
 $theme-multiple-page-control-background-color-active: #F7FAFC;
 
 // 顶栏和侧边栏中展开的菜单 hover 状态下