diff --git a/types/src/color.d.ts b/types/src/color.d.ts
index a37e5cdf2..94e2533b7 100644
--- a/types/src/color.d.ts
+++ b/types/src/color.d.ts
@@ -22,9 +22,10 @@ import {
 export type Coords = [number, number, number];
 
 export interface ColorObject {
-	space: ColorSpace;
+	spaceId?: string | ColorSpace | undefined;
+	space?: string | ColorSpace | undefined;
 	coords: Coords;
-	alpha?: number;
+	alpha?: number | undefined;
 }
 
 export interface ColorConstructor {
@@ -80,7 +81,7 @@ declare namespace Color {
 
 declare class Color {
 	constructor(color: ColorTypes);
-	constructor(space: string | ColorSpace, coords: Coords, alpha: number);
+	constructor(space: string | ColorSpace, coords: Coords, alpha?: number);
 
 	// These signatures should always be the same as the constructor
 	static get(color: ColorTypes): Color;
diff --git a/types/test/color.ts b/types/test/color.ts
index 870c1cc85..6e29ea03f 100644
--- a/types/test/color.ts
+++ b/types/test/color.ts
@@ -2,11 +2,10 @@ import Color from "colorjs.io/src/color";
 
 // @ts-expect-error
 new Color();
-// @ts-expect-error
-new Color("srgb", [1, 2, 3]);
 
 new Color("red");
 new Color(new Color("red"));
+new Color("srgb", [1, 2, 3]);
 new Color("srgb", [1, 2, 3], 1);
 
 const color = new Color("red");