Symbol 5060 from IEC 60417 - Title/Meaning: Hue Function/description: To identify the hue control.
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/99b89fff-0353-4f61-94f8-54f4e014c091 200.png
Vectorization:  Mrmw