diff --git a/deps/agg/src/agg_pixfmt_rgba.cpp b/deps/agg/src/agg_pixfmt_rgba.cpp
index 4541e441b..dff0bdb90 100644
--- a/deps/agg/src/agg_pixfmt_rgba.cpp
+++ b/deps/agg/src/agg_pixfmt_rgba.cpp
@@ -1,6 +1,7 @@
 #include "agg_pixfmt_rgba.h"
 #include <boost/gil/gil_all.hpp>
 #include <boost/gil/extension/toolbox/hsv.hpp>
+#include <boost/gil/extension/toolbox/hsl.hpp>
 //#include <iostream>
 
 namespace agg
@@ -88,15 +89,16 @@ void comp_op_rgba_color<ColorT,Order>::blend_pix(value_type* p,
     {
         using namespace boost;
         using namespace gil;
-        using namespace hsv_color_space;
+        using namespace hsl_color_space;
         rgb8_pixel_t rgb_src(sr,sg,sb);
         rgb8_pixel_t rgb_dst(p[Order::R],p[Order::G],p[Order::B]);
-        hsv32f_pixel_t hsv_src,hsv_dst;
-        color_convert( rgb_src, hsv_src);
-        color_convert( rgb_dst, hsv_dst);
-        get_color(hsv_dst,hue_t()) = get_color(hsv_src,hue_t());
-        get_color(hsv_dst,saturation_t()) = get_color(hsv_src,saturation_t());
-        color_convert(hsv_dst, rgb_dst);
+        hsl32f_pixel_t hsl_src,hsl_dst;
+        color_convert( rgb_src, hsl_src);
+        color_convert( rgb_dst, hsl_dst);
+        get_color(hsl_dst,hue_t()) = get_color(hsl_src,hue_t());
+        get_color(hsl_dst,saturation_t()) = get_color(hsl_src,saturation_t());
+        get_color(hsl_dst,lightness_t()) = get_color(hsl_dst,lightness_t());
+        color_convert(hsl_dst, rgb_dst);
         p[Order::R] = get_color(rgb_dst,red_t());
         p[Order::G] = get_color(rgb_dst,green_t());
         p[Order::B] = get_color(rgb_dst,blue_t());