Update _variables.scss

Signed-off-by: benamar19-b <benamar1906@gmail.com>

Author: benamar19-b

src/assets/scss/_variables.scss

@@ -44,6 +44,9 @@ $notification-info: $blue;
 $notification-pass: $green;
 $notification-note: #777777;
 
+// Graph
+$chart-axis-color: #cfe3ff;
+
 // Components
 //
 // Define common padding and border radius sizes and more.
@@ -229,6 +232,8 @@ $recessed: $grey-850;
   --severity-low: #{$severity-low};
   --severity-info: #{$severity-info};
   --severity-unassigned: #{$severity-unassigned};
+  
+  --chart-axis-color: #{$chart-axis-color};
 
   --notification-fail: #{$notification-fail};
   --notification-warn: #{$notification-warn};