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Here’s a primer on the alphabet soup of printing:
CMYK= cyan, magenta, yellow, black
Digital printing and process (full color) offset printing are printed in these 4 colors. When these 4 ink colors are combined in various proportions, they can create a full range of colors. We can convert any file to CMYK.
RBG = red, green, blue
When these three colors are combined on a computer monitor, they can display a wide range of colors. Since this only works for projected colors, not for printed colors, any files that use RGB colors will be converted to CMYK when printed. RGB has a wider range or gamut of colors than CMYK and the colors can be more vibrant. So if you submit an RGB file for printing, the colors may “pop” less than they do on your monitor.
PMS or spot color
This denotes the inks used for offset printing based on the Pantone Matching System ®. This type of printing yields the most accurate color matching, important for logos and corporate identity, because the ink is specially mixed and is matched to an objective standard. All high-end graphics software comes with Pantone libraries. Just be sure to be consistent in your choice of colors (e.g. PMS 301C is not the same as PMS 301U).