Yeah, technically yes, but the poster above refers to the primary colors used in arts, which are red, blue, and yellow. They do represent subtractive colors magenta, cyan, yellow.
I'd say red yellow and blue is used in elementary school art class, and not much more. And even then, kids almost always have more colors to work with than three.
The subtractive color model isn't really good for paints anyway, it is best with translucent inks/dyes, where the white from the paper comes through.
The subtractive color model isn't really good for paints anyway, it is best with translucent inks/dyes, where the white from the paper comes through.