CMYK (Cyan, Magenta, Yellow and Black) is the colour model used in printing whereas RGB (Red, Green and Blue) is the colour model used to display digital images on a computer screen.
To ensure your product colours are consistent and appear as expected, all files should be supplied as CMYK. Care should be taken to ensure that images are also converted to CMYK, otherwise they may appear duller than they look on screen.
Pantone or spot colours can be used within artwork, however these will be converted to CMYK before print. Due to the process involved in digital printing, we cannot guarantee an exact match to Pantone colours used.