diff --git a/lib/less/node/color.js b/lib/less/node/color.js
index a2fc9f3..ad18cba 100644
--- a/lib/less/node/color.js
+++ b/lib/less/node/color.js
@@ -18,7 +18,7 @@ node.Color.prototype = {
     eval: function () { return this },
     toCSS: function () {
         return '#' + this.value.map(function (i) {
-            return i.toString(16);
+            return Math.round(i).toString(16);
         }).join('');
     },
     '+': function (other) {