Color Blindness Test

This page contains a test about color blindness, sometimes called the color deficiency test. Color blindness occurs when there is a problem with the color-sensing materials (pigments) in certain nerve cells of the eye. These cells are called cones. They are found in the retina, the light-sensitive layer of tissue at the back of the inner eye. If you want, before taking the test you can read more about color blindness.

Warning: This is just a fun test, so don't take it seriously. If you get a bad score, this may not mean you are color blind. It could be that your monitor has color problems, or that your graphic card is not very high in resolution.

What number do you see? 18 26 78 16 Nothing

What number do you see? 13 15 45 46 Nothing

What number do you see? 52 62 68 58 Nothing

What number do you see? 55 66 56 53 Nothing

What number do you see? 83 23 25 85 Nothing

What number do you see? 5 6 0 4 Nothing

What number do you see? 8 3 6 4 Nothing

What number do you see? 88 28 29 89 Nothing

What number do you see? 19 29 42 49 Nothing

What number do you see? 61 31 37 57 Nothing