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Chapter 8. Understanding Colors and Chan... > Understanding the CMYK Color Mode

Understanding the CMYK Color Mode

The CMYK color mode is the color mode of paper and press. Printing presses (sometimes referred to a 4-color press) convert an image's colors into percentages of CMYK (cyan, magenta, yellow, black), which eventually become the color plates on the press. One at a time, the plates apply color to a sheet of paper, and when all 4 colors have been applied, the paper contains an image similar to the CMYK image created in Photoshop. The CMYK color mode successfully takes an image from a monitor to paper. Before converting an image into the CMYK mode, it's important to understand that you will lose some color saturation during the conversion, known as out of gamut. To view the areas of an RGB image that will lose saturation values, click the View menu, and then click Gamut Warning. Photoshop will mask all the areas of the image that are out of gamut.


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