Daniel Smith Watercolor Stick - 3 inch - Prussian Blue

Pigment: Prussian Blue PB 27 (77510) , Lightfastness rating: Excellent, Transparent, Medium-staining, Granulating. 

Prussian Blue is lightfast and transparent, with medium to high staining strength. It disperses and diffuses easily and evenly and can be considered interchangeable with the higher staining Phthalo Blue in application, although Prussian Blue is slightly greener.