From the Cobalt family. Extremely lightfast, traditionally prized for its use in skies and as a part of many landscape palettes. The Cerulean Blue Deep is deeper and greener than the brighter, more traditional shades. (Series 9)

Pigment Classification: Inorganic
Color Index Name: PB36
Color Index Number: 77343
Chemical Description: Cobalt Chromate Spinel
Opacity/Transparency: Semi-Opaque
Lightfastness Rating: 1
Permanency: Excellent