Specifying matching system colors
Selecting colors from a color matching system can be helpful when communicating with a commercial printer about the colors in your layout. You can use the Edit Color dialog box (Edit > Colors > New) to select colors from the following color models: PANTONE Hexachrome, the PANTONE MATCHING SYSTEM, the TRUMATCH color system, the FOCOLTONE color system, DIC, and TOYO. Colors from the color matching systems are primarily used in layouts that are designed for printed output.
TRUMATCH and FOCOLTONE
The TRUMATCH and FOCOLTONE color systems use predefined colors so that the final printed color will closely match the color as printed in the corresponding color swatchbook (subject to variations in paper color, ink purity, and other variables).
Parent topic: Understanding color