How to Printers (printing machine) handle Spot colors and Process colors

Forum|Forum|5 months ago
October 28, 2025
1 reply
148 views

I am a self taugh novice and need to have a bit better understanding of how colors are handled by printing machines. I am using the word machine so that no one thinks I am talking about a print shop. 🙂

I am planning on supplying someone with a pdf to use for dye sublimation on some coffee mugs.

Will a process color print the same as a spot color, if they both are set up with the same, RGB, Lab or CMYK values? Thank you.

Print and publish

Ton Frederiks

Community Expert

"Will a process color print the same as a spot color, if they both are set up with the same, RGB, Lab or CMYK values?"

No, a spot color is a single mixed ink. CMYK describes a color in percentages of the 4 process inks, Cyan, Magenta, Yellow and Black and is for printing. RGB values describe color in various amount of Red, Green and Blue light and is for displays like monitors. Spot colors are generallt used to mix colors that cannot be created with standard CMYK inks.

OssodiSeppiaAuthor

Participant

Thanks for the prompt reply. I understand a spot color is a single mixed ink. If a spot color is defined with the same values as a process color, should they not print the same? The two swatches I've posted use the same color values R-242 G-204 and B-54. Will these no print the same?

Ton Frederiks

Community Expert

RGB values are not inks, they are monitor/display colors made with light.

They can be converted to CMYK inks, but these use various percentages of CMYK inks and to print these percentages, they have to be converted to raster dots. Spot inks do not need to be converted to raster dots to simulate a color, the inks are mixed into a single color (but when you need a percentage of a spot ink color, you need raster dots too).

Sign up

To post, reply, or follow discussions, please sign in with your Adobe ID.

Sign in to Adobe Community

To post, reply, or follow discussions, please sign in with your Adobe ID.

Scanning file for viruses.

This file cannot be downloaded