The Designers Gouache in Prussian Blue by Winsor & Newton is a water-based artist paint in a 14 ml tube. As a Series 1 gouache paint, it is declared with the permanence rating Permanence A. The deep blue shade is suitable for illustrations, painting projects, and creative work on paper or cardboard. Thanks to the practical screw cap, the paint can be dispensed precisely and securely closed again after use.