diff --git a/source/Ox/js/Color.js b/source/Ox/js/Color.js
index 16588b50..2a2791b1 100644
--- a/source/Ox/js/Color.js
+++ b/source/Ox/js/Color.js
@@ -19,7 +19,7 @@ Ox.hsl = function(rgb) {
     if (arguments.length == 3) {
         rgb = Ox.makeArray(arguments);
     }
-    rgb = rgb.map(function(val) {
+    rgb = Ox.clone(rgb).map(function(val) {
         return val / 255;
     });
     var max = Ox.max(rgb),
@@ -66,6 +66,7 @@ Ox.rgb = function(hsl) {
     if (arguments.length == 3) {
         hsl = Ox.makeArray(arguments);
     }
+    hsl = Ox.clone(hsl);
     hsl[0] /= 360;
     var rgb = [0, 0, 0],
         v1, v2, v3;