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Ultramarine is transparent Cobalt is semi-transparent. Cool colors like to recede in a painting, so Cobalt may work better for shadows and background blues, while Ultramarine prefers attention. Ultramarine is typically warmer Cobalt tends to be cooler. National Gallery article: “Fading and Colour Change of Prussian Blue: Methods of Manufacture and the Influence of Extenders” by Jo Kirby and David Saunders, 2004. Cobalt (PB28) mixed with a transparent pigment. If you need blue in your paintings, You’ll probably need ultramarine too.” Prussian blue inclines toward green, whereas ultramarine inclines toward purple. 37 ml Tube - Known for their versatility and array of capabilities, casein paints can be. In response to someone asking if Prussian Blue can be a substitute for Ultramarine Blue: “Prussian blue is quite different from ultramarine, so would not make a good substitute for it. Its qualities include: transparent, very good lightfastness, high oil content, non-toxic and very fast drying. It goes by other names: Berlin Blue, Paris Blue, Antwerp Blue, Milori Blue, Brunswick Blue, Turnbull’s Blue, Chinese Blue, among others. Prussian Blue, considered the earliest of our synthetic, inorganic modern pigments, was first synthesized by the paint maker Diesbach in Berlin around 1706. PB35 is opaque whereas PB 36 is more transparent, has higher tinting strength, and is darker in value than PB 35. Some paint manufacturers label it cerulean blue but the proper name should be cobalt chromite blue. Laboriously ground from lapis lazuli, a semi-precious stone mined only in. Note: there is also PB36 made from oxides of cobalt and chromium. Until the 19th century the best blue pigment available to artists was ultramarine. It was made by the process of sintering, that is by compacting and forming a solid mass of material by heat or pressure without melting it to the point of liquefaction. Fake cerulean made with phthalocyanine blue does horrible things in flesh tone mixtures. Cobalt blue is a synthetic blue pigment was invented in 1803 as a rival to ultramarine. If it isn’t real cerulean blue, it isn’t worth trying to save or use. It’s a mixture of phthalocyanine blue and zinc white or titanium white, or both. It’s useful for painting flesh tones of light-complected people.īeware of a paint labeled: “cerulean blue hue”.

Mixing it thoroughly with a small amount of linseed or walnut oil will bring it to a smooth, controllable consistency. It’s an expensive pigment with good lightfastness. Real Cerulean Blue (PB 35, cobalt stannate) is a compound of cobalt and tin.