![]() Therefore, most of the colours in it are used on warning and traffic signs or are dedicated to government agencies and public services (for example: RAL 1004 - Swiss Postal Service, RAL 1021 - Austrian Postal Service, RAL 1032 - German Postal Service). A main criterion for colours in the RAL Classic collection is to be of 'paramount interest'. To construct hue matching 'anthracite grey' colour from the RAL chart as close as possible, we use the following values ranging from 0 to 255 on the RGB colour system: 56 red, 62 green and 66 blue. ![]() ![]() As 'RAL 840-HR' covered only matte paint the 1980s saw the invention of 'RAL 841-GL' for glossy surfaces, limited to 193 colours. The conversion of RAL 7016 into RGB colour space requres specific composition of red, green, and blue primary colours.
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