What is the primary purpose of the CMYK color model?

The primary purpose of the CMYK color model is tied directly to the printing process. CMYK stands for Cyan, Magenta, Yellow, and Key (Black), which are the primary colors used in color printing. This subtractive color model works by combining these inks in varying percentages to create a wide range of colors on white paper. Each color added absorbs (subtracts) light, hence the term "subtractive."

In the context of printing, using the CMYK model allows for precise control over the colors produced, making it essential for graphic designers and artists who create print materials such as brochures, posters, and other visual media that will be physically printed. The other choices, while related to visual media, typically utilize different color models; for instance, RGB (Red, Green, Blue) is generally used for screens in web design and video production because it is an additive color model that works well with light display outputs.