Re: Mixing an ultramarine blue

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Re: Mixing an ultramarine blue:
I'm currently working on a large canvas and I'll appreciate if somebody help me with some hints of how to make an electric blue with an ultramarine (mix a little green or turquoise blue?). Somebody told me that in order to achieve a vibrant blue a layer of cobalt blue should be applied first.A friend of mine uses Cadmium orange under Cobalt blue for an intense sky. I find layers of cobalt, ultramarine and phthalo blues over each other are good. According to Mayer's book, Cadmium dries slowly and absorbs small amounts of oil. Copper Phthalocyanine blue can be slow drying and can absorb alot of oil whereas Phthalocyanine blue without copper is a fast dryer. It absorbs about the same amount of oil as Cobalt and Ultramarine, which are average dryers. In his chapter on oil painting Mayer says the oil absorbption rate of a pigment gives an indication of the flexiblilty of the paint layer. Keep more flexible layers on top (fat over lean--you probably already know that!)
Re: Mixing an ultramarine blue rob howard Posted at: 07/23/00 (1)
Re: Mixing an ultramarine blue saeed iranpour