Many of us think we have perfect sense of color, but there’s a fascinating new online test that is revealing our eyes are not as clever as we once thought. Created by the team at X-Rite (the owners of the Pantone Color System), the quick test has the user align the blocks of a series of 4 color spectrums in the correct order. The gradient difference between each of the shades is incredibly subtle, and can prove to be challenging to any user. Your results might surprise you, and for added analysis, X-Rite allows you to compare your success to others in your same gender/age bracket. To take the test simply head over to Xrite.com.