A reddish iron-oxide pigment is the basis for this brown that has a naturally light brown mass-tone that appears more red as it becomes extended in tints and glazes

Color Index Number: 12370

slightly more transparent than Titanium

siennas and ocres

Color Index Number: 73915

pyrrole red vallejo akrylmaling Madder (Crimson) Lake Deep Extra A reddish iron-oxide pigment isColour: Pyrrole RedPermanence: AAOpacity: OpaquePigment: PR254Pigmentdescription: PyrrolopyrrolASTMRating Ligthfastness: IPigment classification: Synthetic organicColorIndex Number: 56110Viscosityrange (mPa. s): 800 1. 500 Colour IndexThe pigments used for artists' colours are inorganic as well as organic. The inorganic pigments have been used since antiquity; most of them are extracted from minerals and soil, such as natural earth colours, siennas