diff --git a/lib/less/functions.js b/lib/less/functions.js
index f99264c11..07ff203f4 100644
--- a/lib/less/functions.js
+++ b/lib/less/functions.js
@@ -136,6 +136,13 @@ tree.functions = {
         hsl.l = clamp(hsl.l);
         return hsla(hsl);
     },
+    brighter: function (color, amount) {
+        var hsv = color.toHSV();
+
+        hsv.v += amount.value / 100;
+        hsv.v = clamp(hsv.v);
+        return hsva(hsv);
+    }, 
     fadein: function (color, amount) {
         var hsl = color.toHSL();
 
@@ -730,6 +737,10 @@ function hsla(color) {
     return tree.functions.hsla(color.h, color.s, color.l, color.a);
 }
 
+function hsva(color) {
+    return tree.functions.hsva(color.h, color.s, color.v, color.a);
+}
+
 function scaled(n, size) {
     if (n instanceof tree.Dimension && n.unit.is('%')) {
         return parseFloat(n.value * size / 100);