Updated 10 March 2002

Screen Colour Checking

Gamma Calibration Patches

These should all appear as patches of solid colour if your monitor is gamma corrected.

25% 50% 75%
Grey 25% grey 50% grey 75% grey
Red 25% red 50% red 75% red
Green 25% green 50% green 75% green
Blue 25% blue 50% blue 75% blue

Colour Levels

You should be able to see 15 distinct levels in each colour band.

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Grey                                
Red                                
Green                                
Blue