ps color in what is called pure color?

The so-called pure color in the true sense of only three is the traditional three primary colors red, yellow and blue in the PS three primary colors are red, green and blue

Other colors are the use of the three primary colors out of the color red, yellow and blue out of the color is called the secondary color, for example, red + yellow = orange Orange is the secondary color Red + blue = purple is the second color, the second color is the second color, the second color is the second color, and then mixed with a mixture of three times the third color Orange and purple do not get together, this two colors together is really not beautiful, but exceptions

What do you mean by "pure color"? The two colors together are not very beautiful, but there are exceptions.