diff --git a/group_vars/custom-sites.yml b/group_vars/custom-sites.yml
index d85e7e42c..028e8cc61 100644
--- a/group_vars/custom-sites.yml
+++ b/group_vars/custom-sites.yml
@@ -222,7 +222,7 @@ galaxy_custom_sites:
     brand: Single Cell Omics
     custom_css: |
       #masthead {
-          background-color: #FA9BFA !important;
+          background-color: #530080 !important;
       }
   - name: humancellatlas
     brand: Human Cell Atlas