pigment dry coloring material (especially a powder to be mixed with a liquid to produce paint, etc.)
haemoglobin,
hb,
hemoglobin a hemoprotein composed of globin and heme that gives red blood cells their characteristic color; function primarily to transport oxygen from the lungs to the body tissues; "fish have simpler hemoglobin than mammals"
myoglobin a hemoprotein that receives oxygen from hemoglobin and stores it in the tissues until needed
