hēi
black
Pictograph of a person whose face has been tattooed. In ancient China criminals were punished by having their faces permanently marked. Later writers reanalyzed the character as a chimney being blackened by fire, so the bottom component was written to look like 炎 (flame).
Evolution

Oracle script
(~1250-1000 BC)
Bronze script
Early Western Zhou (~1000 BC)
Seal script
Shuowen (~100 AD)
Clerical script
Eastern Han dynasty (25-220 AD)Regular script
ModernDefinitions
Component uses
Iconic component in 1 character (1 verified)
Sources
季旭昇《說文新證》p.760