The list of colour acronyms and abbreviations.

All colour related acronyms and abbreviations.

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CLR:
Clear(Electrical wiring, Wiring color, Colour)
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R:
Red(Wire color, Wiring color, Colour)
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Y:
Yellow(Wire color, Wiring color, Colour)
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YEL:
Yellow(Electrical wiring, Wiring color, Colour)
For more, try COLOUR on ALL ACRONYMS DICTIONARY
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APASmart Define. (2018). colour. Retrieved September 22, 2026, from http://smartdefine.org/colour/abbreviations/r/Telecom
ChicagoSmart Define. 2018. "colour" http://smartdefine.org/colour/abbreviations/r/Telecom (accessed September 22, 2026).
HarvardSmart Define 2018, colour, Smart Define, viewed 22 September, 2026, <http://smartdefine.org/colour/abbreviations/r/Telecom>.
MLASmart Define. "colour" 14 February 2018. Web. 22 September 2026. <http://smartdefine.org/colour/abbreviations/r/Telecom>