Recognizing nonprintable colors (Photoshop)

Some colors in the RGB, HSB, and Lab color models, such as neon colors, cannot be printed because they have no equivalents in the CMYK model. When you select a nonprintable color, an alert triangle appears in the Color Picker dialog box and in the Color palette. The closest CMYK equivalent is displayed below the triangle. (See Identifying out-of-gamut colors (Photoshop).)

Note: The alert triangle is not available if you've chosen to use Web-safe sliders.

Printable colors are determined by your current CMYK working space as defined in the Color Settings dialog box.

To select the closest CMYK equivalent for a nonprintable color:

Click the alert triangle that appears in the Color Picker dialog box or the Color palette.