Our system does accept RGB colour files and automatically converts them to their CMYK equivalents for printing, but the colour conversion is not always perfect.
Any technological device, whether computer monitors, TVs, phones or LCDs, use an RGB colour profile. This is because an RGB profile uses red, green, and blue light to make the different colours – there’s no ink in sight. To reproduce RGB files in print, you have to convert them to a CMYK format. Instead of blending light, this format blends Cyan, Magenta, Yellow and blacK ink to make the piece more printer friendly.
For more information on the differences between the RGB and CMYK colour models, please read our detailed explanation.
We have also created a list of suggested CMYK values to help ensure bright, vivid colours when printing.