meariver:

dbvictoria:

25% of the people have a 4th cone and see colors as they are

Given the sudden interest for the color of dresses and vision, here some of the fascinating findings we did recently.

The color nuances we see depend on the number and distribution of cones (=color receptors) in our eye. You can check this rainbow: how many color nuances do you count?

You see less than 20 color nuances: you are a dichromats, like dogs, which means you have 2 types of cones only. You are likely to wear
black, beige, and blue. 25% of the population is dichromat.

You
see between 20 and 32 color nuances: you are a trichromat, you have 3
types of cones (in the purple/blue, green and red area). You enjoy
different colors as you can appreciate them. 50% of the population is
trichromat.

You see between 33 and 39 colors: you are a
tetrachromat, like bees, and have 4 types of cones (in the purple/blue,
green, red plus yellow area). You are irritated by yellow, so this color
will be nowhere to be found in your wardrobe. 25% of the population is
tetrachromat.

You see more than 39 color nuances: come on, you are
making up things! there are only 39 different colors in the test and
probably only 35 are properly translated by your computer screen anyway
🙂

It is highly probable that people who have an additional 4th
cone do not get tricked by blue/black or white/gold dresses, no matter
the background light 😉

(x)

I see 37! Also, for the dress thing—I kept seeing ti as white and gold, then I would scroll past to read what it was about, then scroll back up and it would look blue and black. It was wild. This happened twice, and I couldn’t make myself see it as white and gold again on purpose.