Description
Umber is essentially clay, and this variation on the PBr7 pigment is the lighter (un-burnt) version of this classic earth tone that originated in the Umbria region of Italy.
Pigment Classification : Natural Inorganic
Color Index Name : PBr 7
Color Index Number : 77492
Chemical Description : Natural Iron Oxide containing Manganese
Opacity/Transparency : 1
Lightfastness Rating : I
Permanency : Excellent
Munsell Notation Listing :Hue 3.0 YValue 2.5Chroma 1.3
Gloss Average : 16.59
Viscosity Range : 23000- 27000 CPS
CIE L*a*b* Values : L*29.25 a*1.04 b*2.67
Tint Strength : 76.39