How do people see the dress as Black/Blue when the RGB values shows that the color of the dress in the Image is a light purple and a brown ish color?

Question

How do people see the dress as Black/Blue when the RGB values shows that the color of the dress in the Image is a light purple and a brown ish color?

In: Other

Answer 1

That’s because it pretty much is black and blue. The black just happens to be lighter, the blue is more mild, and there’s the brown-gold.

I don’t understand how anyone could possibly see white though.