diff --git a/types/three/three-core.d.ts b/types/three/three-core.d.ts
index d2a09b808e..1fae2f6857 100644
--- a/types/three/three-core.d.ts
+++ b/types/three/three-core.d.ts
@@ -1917,9 +1917,9 @@ export class LightShadow {
 export class AmbientLight extends Light {
     /**
      * This creates a Ambientlight with a color.
-     * @param hex Numeric value of the RGB component of the color.
+     * @param color Numeric value of the RGB component of the color or a Color instance.
      */
-    constructor(hex?: number|string, intensity?: number);
+    constructor(color?: number|string|Color, intensity?: number);
 
     castShadow: boolean;
 }
@@ -1936,7 +1936,7 @@ export class AmbientLight extends Light {
  * @see <a href="https://github.com/mrdoob/three.js/blob/master/src/lights/DirectionalLight.js">src/lights/DirectionalLight.js</a>
  */
 export class DirectionalLight extends Light {
-    constructor(hex?: number|string, intensity?: number);
+    constructor(color?: number|string|Color, intensity?: number);
 
     /**
      * Target used for shadow camera orientation.
@@ -1957,7 +1957,7 @@ export class DirectionalLightShadow extends LightShadow {
 }
 
 export class HemisphereLight extends Light {
-    constructor(skyColorHex?: number|string, groundColorHex?: number|string, intensity?: number);
+    constructor(skyColor?: number|string|Color, groundColor?: number|string|Color, intensity?: number);
 
     groundColor: Color;
     intensity: number;
@@ -1972,7 +1972,7 @@ export class HemisphereLight extends Light {
  * scene.add( light );
  */
 export class PointLight extends Light {
-    constructor(hex?: number|string, intensity?: number, distance?: number, decay?: number);
+    constructor(color?: number|string|Color, intensity?: number, distance?: number, decay?: number);
 
     /*
         * Light's intensity.
@@ -1999,7 +1999,7 @@ export class PointLightShadow extends LightShadow {
  * A point light that can cast shadow in one direction.
  */
 export class SpotLight extends Light {
-    constructor(hex?: number|string, intensity?: number, distance?: number, angle?: number, exponent?: number, decay?: number);
+    constructor(color?: number|string|Color, intensity?: number, distance?: number, angle?: number, exponent?: number, decay?: number);
 
     /**
      * Spotlight focus points at target.position.