Grumbacher Pre-Tested Oil Paint, 37ml/1.25 Ounce, Ultramarine Violet (P221G) A cool grayish-purple that is highly transparent and may be considered the counter point to the warmer Cobalt Violet Creates a grey-lavender in tints, and glazes ideal for shadow work Each color swatch has been tested for masstone, mixability, lightfastness, drying properties, pigment dispersion and viscosity Truly a professional paint, the majority of our colors are single pigment, and have a lightfast rating of 1-excellent Pre-tested Professional offers artists a modern palette with superior tinting strength and is made in USA