What is now known as royal blue is associated with Cobalt Blue. This French Royal Blue is lighter. Like the iris of a fleur-de-lis. Clear, bright.Series: 3
CI Number: NA
CI Name: PW6, PB29, PB15:3
Pigment Name: Titanium Dioxide Rutile, Polysulfide of Sodium-Alumino-Silicate, Copper Phthalocyanine
Lightfastness: ASTM I - Excellent
Opacity: Opaque
Grind: Very Fine