diff --git a/frontend/less/espo/custom.less b/frontend/less/espo/custom.less
index 57079a6944..70a2873dfe 100644
--- a/frontend/less/espo/custom.less
+++ b/frontend/less/espo/custom.less
@@ -301,14 +301,14 @@ div.list-kanban > div > table {
     }
 
     th.group-header.group-header-primary {
-        background-color: @brand-primary;
+        background-color: @panel-primary-border;
         > div:before {
-            border-color: transparent transparent transparent @brand-primary;
+            border-color: transparent transparent transparent @panel-primary-border;
         }
     }
     th.group-header.group-header-before-primary {
         > div:after {
-            background-color: @brand-primary;
+            background-color: @panel-primary-border;
         }
     }