That would most likely be Melonin (if I am incorrect feel free to improve!)
myoglobin
ceramic pigment
myoglobin gives the muscles the reddish brown color
Because of the colored pigment that is added to it.
One is sepia.
Umber
Sepia
Sienna
Sienna
One common yellow-brown pigment is Ochre. It is a natural earth pigment containing hydrated iron oxide. It has been used in art and decoration for thousands of years.
The pigment is melanin.
the pigment in your skin