Winsor and Newton is arguably the premier brand of watercolor in the world. We offer a beaurtiful transparent French Ultramarine, which is just a little different than the "Ultramarine Blue" color. It;'s true that an ultramarine is foundational to every artist's palette, but French Ultramarine is the more preferred (and usually more expensive) of the two ultramarine colors. A semi-transparent flocculating color, The W&N French Ultramarine, among all well-known manufacturers, is particularly known for providing some of the most beautiful textures in washes known to the watercolor world. French ultramarine differs from the "ultramarine blue" color by being just a little darker and warmer.
French Ultramarine is well known for mixing particularly well with violets and magentas. If you only choose one blue for your palette, this French Ultramarine color is the one you want to choose!