PANTONE matching (PMS) is a system used to match colours for print purposes. Whilst RGB or CMYK colour codes can be used for printing on paper, however these are not suitable for the ink matching processes used in screen and pad printing on physical products. If you require a specific colour for materials or printing, you should supply us with the correct PANTONE colour code.
You can read more about PANTONE colours and find colour codes on the PANTONE Website.
Please also note that colours are often not accurately reproduced on a computer screen - therefore the colour on your PDF proof may look slightly different on screen to that which you expect of a printed product.