These are formulated colors that can be purchased as inks to always get the accurate shades necessary for print. If you’re working in print, you’ll likely use a lot of Pantone colors, or “spot colors”, to choose what you use to design. The combinations of RGB create the CMY in CMYK! And you’ll notice the reverse happens with the subtractive color diagram – the overlaps of cyan, yellow, and magenta create red, green, and blue.
And blue and green create cyan (the absence of red). Red and green create yellow (the absence of blue). Notice anything interesting? Blue and red create magenta (the absence of green). These three colors, added together, create white light. In the light spectrum, however, colors are additive, and it's utilized by the RGB color mode.
