diff --git a/src/setAll.js b/src/setAll.js
index 54afeeba1..7c8aba4ae 100644
--- a/src/setAll.js
+++ b/src/setAll.js
@@ -1,11 +1,25 @@
 import ColorSpace from "./space.js";
 import getColor from "./getColor.js";
 
+/**
+ * Set all coordinates of a color at once, in its own color space or another.
+ * Modifies the color in place.
+ * @param {Color} color
+ * @param {ColorSpace | string} [space=color.space] The color space of the provided coordinates.
+ * @param {Array<number>} coords Array of coordinates
+ * @returns {Color}
+ */
 export default function setAll (color, space, coords) {
 	color = getColor(color);
 
-	space = ColorSpace.get(space);
-	color.coords = space.to(color.space, coords);
+	if (Array.isArray(space)) {
+		// Space is omitted
+		[space, coords, alpha] = [color.space, space, coords];
+	}
+
+	space = ColorSpace.get(space); // Make sure we have a ColorSpace object
+	color.coords = space === color.space ? coords.slice() : space.to(color.space, coords);
+
 	return color;
 }
 
diff --git a/test/coords.js b/test/coords.js
index e3227a4c6..dc6c369cd 100644
--- a/test/coords.js
+++ b/test/coords.js
@@ -85,6 +85,25 @@ export default {
 					},
 					expect: 1,
 				},
+				{
+					name: "color.setAll(newCoords)",
+					run () {
+						let color = new Color("srgb", [0, 1, 0]);
+						color.setAll([1, 0, 1]);
+						return [...color.coords];
+					},
+					expect: [1, 0, 1],
+				},
+				{
+					name: "color.setAll(space, newCoords)",
+					run () {
+						let color = this.data.red_oklch.clone();
+						color.setAll("srgb", [1, 0, 1]);
+						return [...color.coords];
+					},
+					// https://colorjs.io/apps/convert/?color=%23f0f&precision=4
+					expect: [0.7016738591017413, 0.32249098770537216, 328.36341517499017],
+				},
 				{
 					name: "color.coords[index] = value",
 					run () {
@@ -149,7 +168,7 @@ export default {
 					expect: 13.480970445148008,
 				},
 				{
-					name: "color.set(coordsObject)",
+					name: "color.set(object_with_coords)",
 					run () {
 						let color = this.data.red.clone();
 						color.set({"lch.c": 13, "lch.l": 40});