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Urban's Colour Reference Charts

n by Martin Waligorski

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Real colours and scale effect

Federal Standard codes given in the charts refer most often to the shade of the original colour. Original colour shades used on a small scale model will make it appear to dark, and have too much contrast. This phenomenon is commonly known as scale effect on colour.

To avoid this, the shades should be lightened by mixing in a certain amount of white. Ian Huntley, a well-recognised authority within aero colours, arrived at the following guidelines (published in Scale Aircraft Modelling vol 5 nr 10):

Scale Add % of white
1/32 7%
1/48 10%
1/72 15%
1/144 23%

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