diff --git a/src/vs/editor/contrib/hover/modesContentHover.ts b/src/vs/editor/contrib/hover/modesContentHover.ts
index 6a59698ea1b..485175ffa7a 100644
--- a/src/vs/editor/contrib/hover/modesContentHover.ts
+++ b/src/vs/editor/contrib/hover/modesContentHover.ts
@@ -354,7 +354,7 @@ export class ModesContentHoverWidget extends ContentHoverWidget {
 				containColorPicker = true;
 
 				const { red, green, blue, alpha } = msg.color;
-				const rgba = new RGBA(red * 255, green * 255, blue * 255, alpha);
+				const rgba = new RGBA(Math.round(red * 255), Math.round(green * 255), Math.round(blue * 255), alpha);
 				const color = new Color(rgba);
 
 				if (!this._editor.hasModel()) {