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APPENDIX 2:
RGB colour charts
The RGB colour space (or gamut) is much broader than the gamut of a process colour
printer or press. Consequently, many colours available in the RGB colour space cannot
be reproduced on a process colour device.
A common area of discontent with customers is the issue of colour conversion from RGB
to CMYK, ie, the colours they see on their display and the same colours as they appear
on the printed page. Most customers who work in the office environment do not
understand colour and how it is produced and/or reproduced.. A typical complaint is:
"My PowerPoint background is blue – why is it printing as purple?"
The following charts can be used as a guide to how RGB colours are reproduced on the
DocuColor 2060. Each chart has a fixed percentage of red and a mixture of green and
blue in stepped increments.
Due to differences between individual DocuColor 2060 digital colour presses, machine
set-up (eg screening), RIPs, RIP options, calibration used, environment, and papers
used and their condition, these charts should be used as a guide only. The following
charts may differ somewhat from the printed results you get on your DocuColor 2060.
Therefore it’s important that you make sure you print these charts on your DocuColor
2060, utilising your RIP, settings, calibration and paper to give to clients for colour
selection and matching.
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