The color of night sky or shadows, very dark, reddish, semi-opaque blue with strong tinting, also known as Indanthrone.Aversatile alternative to Ultramarine yet not as overpowering as Phthalo.

Pigment Classification: Organic

Color Index Name: PB 60

Color Index Number: 69800

Chemical Description: Indanthrone

Opacity/Transparency: Semi-Transparent

Lightfastness Rating: I

Permanency: Excellent