Learn how good you are at discriminating colors with this app. It uses four colored quadrants, three of which are the same color and one with a slightly different hue. The test has six rounds, each with eight different hues. Your task is to click the quadrant that doesn’t match the others.

This app is located on its own server.

If you are not redirected within 3 seconds, click here to go to the Huebidoo homepage.