pigment
noun /ˈpɪɡmənt/
  /ˈpɪɡmənt/
[uncountable, countable]- a substance that exists naturally in people, animals and plants and gives their skin, leaves, etc. a particular colour- Haemoglobin is the red pigment found in blood.
 
- a coloured powder that is mixed with a liquid to produce paint, etc.- The wool is coloured using only natural pigment dyes.
 
Word OriginMiddle English, from Latin pigmentum, from pingere ‘to paint’