Around these parts, we like four colors. Not three and certainly not one. EW. Stationery HQ files should be set up with CMYK, not RGB or Pantone/PMS colors.
To make it easy, we made a visual guide to show you where to convert colors using three different Adobe programs.
InDesign:
Illustrator:
Photoshop:
When in doubt about how to set up your files, please check out our File Setup Guidelines.
Note: We’re using the Adobe Creative Cloud version of these programs, so they might look slightly different than yours.