A darker than middle value Neutral Gray, precisely matched to Munsell Gray for artists exploring values. (Series 1)

Pigment Classification: Mixture
Color Index Name: PBk9 / PW6 / PBr7
Color Index Number: 77891 / 77267 / 77491
Chemical Description: Amorphous Carbon produced by charring animal bones / Titanium Dioxide Rutile / Calcined Natural Iron Oxide
Opacity/Transparency: Semi-Opaque
Lightfastness Rating: 1
Permanency: Excellent