diff --git a/d3/d3.d.ts b/d3/d3.d.ts
index 382a95875..ef7f1da72 100644
--- a/d3/d3.d.ts
+++ b/d3/d3.d.ts
@@ -1414,6 +1414,18 @@ declare module D3 {
         }
 
         export interface HSLColor extends Color{
+            /**
+            * hue
+            */
+            h: number;
+            /**
+            * saturation
+            */
+            s: number;
+            /**
+            * lightness
+            */
+            l: number;
             /**
             * convert from HSL to RGB.
             */
@@ -1421,6 +1433,18 @@ declare module D3 {
         }
 
         export interface LABColor extends Color{
+            /**
+            * lightness
+            */
+            l: number;
+            /**
+            * a-dimension
+            */
+            a: number;
+            /**
+            * b-dimension
+            */
+            b: number;
             /**
             * convert from LAB to RGB.
             */
@@ -1428,6 +1452,18 @@ declare module D3 {
         }
 
         export interface HCLColor extends Color{
+            /**
+            * hue
+            */
+            h: number;
+            /**
+            * chroma
+            */
+            c: number;
+            /**
+            * luminance
+            */
+            l: number;
             /**
             * convert from HCL to RGB.
             */