The Colour Group logo is based on NEWTON's experiment using a prism to break white light into its constituent colours USEFUL COLOUR IMAGES AND OTHER INFORMATION

Useful Colour Images

Here are some useful colour images that you may like to use for lectures, slides or Web Pages. The colours of the spectrum have been selected by trial and error so as to reproduce reasonably on a LaserGraphics Film Recorder, using Ektachrome film

The CIE x-y chromaticity diagram in 250 colours. The CIE x-y chromaticity diagram in 250 colours (36K).
The CIE x-y chromaticity diagram in true colour .png format. The CIE x-y chromaticity diagram in true colour .png format.(73K).
The CIE u'-v' chromaticity diagram in 250 colours. The CIE u'-v' chromaticity diagram in 250 colours (35K).
The CIE u'-v' chromaticity diagram in .png format. The CIE u'-v' chromaticity diagram in true colour .png format (66K).
The visible spectrum in 250 colours The visible spectrum in 250 colours (intended as a background for diagrams of spectral distribution functions, the black marker lines indicate 400nm, 500nm etc) (9K)
Illustration of additive colour mixing Additive colour mixture: the usual red, green and blue spots of light (26K)
Illustration of subtractive colour mixingSubtractive colour mixture: overlapping cyan, magenta and yellow filters (9K) 

If you wish to use a Colour Group logo, e.g. for a PowerPoint presentation at a meeting of the Group, a suitable file is available from the Web Master: apply to him at the email address below.
Email: email address as image
The Colour Group of Great Britain - Homepage
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Last Updated 13 November 2005
http://www.colour.org.uk/images.html