There was a very famous video in 2011 from MinutePhysics saying that the pink color does not exist because it doesn't have a particular frequency. Meaning :
"Light is both particle and wave, and like other waves, moves at certain frequencies. The visible light we see zips in at about 400 million, million times per second depending on the color. Violet (at one end of the visible spectrum), is the fastest, while red (at the other end) takes its sweet time. The other colors in the spectrum, moving at their particular frequencies, are indigo, blue, green, yellow and orange. The color pink, not a part of this spectrum, does not have a particular frequency." - article The Pink Color Doesn't Exist? So Why Can We See It? , posted in November, 2013.
There are two ways for the human eye to see the color pink and its variations:
Treating it like light: according to theoreticians of color from University of San Diego, USA, the pink is the absence of green. By that means, that the pink color results from the white color with all the green light removed. In this case, the pink is to the green the same thing the black it to the white: the absence.

So, to say that the pink color doesn't exist is wrong. We can say that the pink, as light, is an illusion created by our brains.
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