Product Description NEW COLOR for 2023! A dull yellow pigment, Mars Yellow is a synthetic iron oxide pigment. Mars Yellow is our most opaque yellow and is useful for capturing a variety of subject matter from landscapes to botanicals. Artist Notes : Truly versatile across a range of applications, Mars Yellow is more opaque than Golden Ochre and duller than Naples Yellow Deep. Combine Mars Yellow with a range of purples and violets to create beautiful browns that add depth and complexity to dried foliage and grasses. Opacity : Opaque Paint Makers Notes : Developed at the end of the 18 th century in response to depleted natural pigment deposits, synthetic iron oxides were given the name Mars after the Roman god of war and our planetary neighbour which has almost double the amount of iron oxide in its outer layers than our own. Pigment Number : PY 42 Pigment Type : Synthetic Inorganic Pigment Composition : Iron Oxide Lightfastness : I Excellent Toxicity : Non Toxic