diff --git a/apps/common/main/resources/less/calendar.less b/apps/common/main/resources/less/calendar.less
index 8e62b44d0..5f0fd3c21 100644
--- a/apps/common/main/resources/less/calendar.less
+++ b/apps/common/main/resources/less/calendar.less
@@ -1,4 +1,4 @@
-@calendar-bg-color: #446995;
+@calendar-bg-color: @tabs-bg-color;
 
 .calendar-window {
   border-radius: 0;