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design colour
visible colour space
human colour spectrum CIE 1931 chromaticity diagram This diagram is the CIE 1931 chromaticity diagram which, although slightly outdated, represents the range of spectral colours visible to the human eye. This colour space is also known as a 驶gamut始. Colour gamuts help the designer realise the limitations with colour within web and print. RGB can produce around 70% of the visible spectrum whilst CMYK can reproduce a lot less. Quite a vast number of colours cannot used for printing with CMYK, spot colours are a costly way to solve this problem. RGB can be translated into CMYK, usually dulling the image and providing noticeable change, although, some colours translate well. The image of the diagram was originally in RGB and once translated to CMYK, it lost a lot of brightness and a large amount of colour.