CMYK stands for Cyan, Magenta, Yellow, and Key (black). It's a color model used in color printing. In this model, colors are created by combining different percentages of these four ink colors. Each color absorbs light to varying degrees, allowing for a wide range of colors to be produced. CMYK is commonly used in printing processes, such as offset printing, where layers of these four colors are overlaid to create the full spectrum of hues needed in printed materials. I suggest looking into CMYK printing if you're interested in learning more about the intricacies of color reproduction in print media.