diff --git a/js/util/Color.js b/js/util/Color.js
index 5f4b942b0..0a9579264 100644
--- a/js/util/Color.js
+++ b/js/util/Color.js
@@ -567,7 +567,7 @@ class Color {
    * @public
    * @returns {string}
    */
-  toHex() {
+  toHexString() {
     let hexString = this.toNumber().toString( 16 );
     while ( hexString.length < 6 ) {
       hexString = `0${hexString}`;
@@ -586,7 +586,7 @@ class Color {
       g: this.g,
       b: this.b,
       a: this.a,
-      hex: this.toHex()
+      hex: this.toHexString()
     };
   }