Free colorblind test

How well can you
see color?

Tell us what you see in the following images and share the test results with your friends!

Get started

Did you know ...
why Facebook is blue?

Because Mark Zuckerberg is red-green color blind. Blue is the richest color people with this type of color blindness can see, which is why it is Facebook's dominant color.

Continue to next image

Did you know ...
who discovered color blindness?

John Dalton was the first to investigate color blindness and was color blind himself.
His diagnosis was confirmed in 1995, some 150 years after his death, by DNA analysis of his preserved eyeball, which he had donated to science.

Continue to next image

Did you know that ...
only 1 in 200 women are color blind?

However, only women can be carriers of the color blindness gene. So if you are male and your father is color blind, then you cannot inherit it from him.

Continue to next image

Did you know that ...
1 in 10 men are color blind?

However, this stern statistic is mostly true only for Western societies. In comparison, only 1 in 100 Inuit men are color blind.

Continue to next image