Test: How many colors you see can determine how many colour receptors you have

Just the other week, everyone was talking about the dress. Was it blue/black or white/gold?

But many people still couldn’t grasp why they saw the dress different than others.

An expert in neuromarketing created a post on LinkedIn explaining the basics of vision.

“The colour nuances we see depend on the number and distribution of cones ( = colour receptors) in our eye,” wrote Diana Derval on LinkedIn.

In the article, she posted a colour spectrum like this one below.

Readers were asked to count how many different colours they saw.

If you see less than 20 colours, you are like 25 percent of the population and dichromat. Dichromats have two types of colour receptors.

If you see between 20 and 32 colours, you have three types of colour receptors. About 50 percent of the population are trichromats.

If you see between 33 and 39 colours, you are a tetrachromat and have four types of cones.

Derval says tetrachromats are irritated by the colour yellow but are less likely to be tricked by the blue/black or white/gold dress, no matter the lighting.

Only about 25 percent of the population is tetrachromat.

In case you were wondering, there were 39 different colours in the test.

Some are critical of the test.

Snopes claims the test is fake. The website says research shows “computer monitors are not capable of displaying the range of colours required to create an online test for tetrachromacy.”