Winsor & Newton Cotman 660 ultramarine watercolour paint (half nap) has excellent colour strength and is easy to mix. In addition to bright colours, this paint also has good transparency. Create beautiful colour effects by using the watercolor paint directly from the half cup or mixing it with water. Cotman's watercolour paint is of study quality, because some more expensive pigments have been replaced by less expensive alternatives. This makes this paint very suitable for beginners and heavy users.