CMYK (Cyan, Magenta, Yellow, Black) is a color model used in printing to reproduce a wide range of colors by mixing different percentages of these four ink colors. It is also known as the "4 color process" because it uses these four primary ink colors to create a full-color image.  In the CMYK color model:  Cyan absorbs red light and reflects blue and green light.  Magenta absorbs green light and reflects red and blue light.  Yellow absorbs blue light and reflects red and green light.  Black, represented by "K" in CMYK, is used to add depth and improve contrast in the final printed image.  When printing in CMYK, tiny dots of these four ink colors are applied in varying densities to create a wide spectrum of colors, shades, and tones. By overlapping the dots in different patterns, the printer can produce the illusion of continuous tones and reproduce high-quality images and graphics.  CMYK printing is commonly used in the printing industry for producing full-color materials like brochures, labels, magazines, and other marketing materials. It is the standard color model for most digital and offset printing processes.  When designing your labels, it is essential to work in the CMYK color space to ensure the colors you choose on your computer screen accurately translate to the printed labels. Some colors that are easily represented on digital screens (using the RGB color model) may appear differently when printed in CMYK, so it's essential to check proofs and test prints to achieve the desired color accuracy and quality for your labels.