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Color Basics for Print and Web

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CMY Color in Desktop Publishing

Color Basics

CMYK Color Percentages

J. Bear
Color (light) is made by subtracting differing amounts of other colors from the additive primaries (RGB). But in printing when we are mixing (adding) inks together the colors don't come out as we might expect. Therefore, we start with the subtractive primaries (CMY) and mix those in varying amounts (plus BLACK abbreviated as K) to get the colors we want.

Colors for print are mixed in percentages such as:

  • 50% CYAN 100% MAGENTA 25% YELLOW
    or
  • C50 M100 Y25

  • And since black is typically used along with CMY, a percentage for black (even if it is 0) is included as well, such as: C50 M100 Y25 K0

The color in this example is a purple color made with differing amounts of each of the subtractive primaries (and no black).

This CMY(K) color model is only one of many ways we can express color for print — but we'll save that topic for another feature. There are other color-related terms which we'll address briefly followed with more on specifying colors for print work.

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