Symbol 5048 from IEC 60417 - Title/Meaning: Colour (qualifying symbol) Function/description: To distinguish between the controls and terminals for colour from those for monochrome operation.
Additional information: 
If this symbol is reproduced in colour, the colours of the dots shall be red (left), blue (top) and green (right)
Published in: First edition, 1973
Own work using: iso.org/obp/graphics/grs/d81b7e09-1466-48f1-ae3c-c895b724d397 200.png
Vectorization:  Mrmw