diff --git a/types/webdriverio/index.d.ts b/types/webdriverio/index.d.ts
index 8b8a4d9f3c..9f7a0e1be0 100644
--- a/types/webdriverio/index.d.ts
+++ b/types/webdriverio/index.d.ts
@@ -37,6 +37,7 @@ declare namespace WebdriverIO {
     interface ParsedCssProperty {
         hex: string;
         alpha: number;
+        rgb: string;
         rgba: string;
         type: string;
         string: string;