Winsor Violet (Dioxazine) is a vivid mid-shade purple pigment. When undiluted, it can be used as a deep black. It is a transparent coal tar pigment and was introduced into the Winsor & Newton...
Winsor Blue is a deep intense blue which when undiluted, forms an inky blue-black. It is made from the modern pigment Phthalocyanine which was introduced in the 1930s.
