diff --git a/shell/browser/api/electron_api_system_preferences_mac.mm b/shell/browser/api/electron_api_system_preferences_mac.mm
index 9281837fc077c..3bc90d57ac6da 100644
--- a/shell/browser/api/electron_api_system_preferences_mac.mm
+++ b/shell/browser/api/electron_api_system_preferences_mac.mm
@@ -405,7 +405,7 @@ AVMediaType ParseMediaType(const std::string& media_type) {
     return "";
   }
 
-  return ToRGBHex(skia::NSSystemColorToSkColor(sysColor));
+  return ToRGBAHex(skia::NSSystemColorToSkColor(sysColor));
 }
 
 bool SystemPreferences::CanPromptTouchID() {