Producing and Printing Consistent Color - Adobe Photoshop CC - page 455

• Drag the Lightness to darken (we used -2).
9. Choose View > Gamut Warning. You have removed most of the out-of-
gamut colors from the image. Choose View > Gamut Warning again to
deselect it.
10. Close the duplicate image file without saving it.
Converting an image to CMYK
It's generally a good idea to work in RGB mode as long as possible. Converting
between modes causes color values to be rounded—and therefore less accurate if
you convert multiple times. Once you've made any last-minute corrections, you're
ready to convert the image to CMYK. If you think you may want to output the
image to an inkjet printer or distribute it digitally later, save a copy in RGB mode
before converting to CMYK mode.
1. Click the Channels tab to bring the Channels panel to the front.
The image is currently in RGB mode, so there are three channels listed: red, green,
and blue. The RGB channel is not actually a channel, but a composite of all three.