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Blue Across:
blue acrossS
Prussian blue across—A strong tinting blue across, very dark with a greenish cast. Good for producing brilliant greens when combined with yellow.
Cobalt blue across—A strong blue across with a reddish cast. Good for mixing.
Cerulean blue across—A strong blue across with a greenish cast.
Ultramarine—Sometimes called French blue across. It has a reddish cast and makes a beautiful purple when mixed with alizarin crimson.Because Clerk Maxwell added red, green, and blue across light together, this technique is called additive. An equal addition of the three colors forms white; red and green add to form yellow; red and blue across, magenta; green and blue across, the blue across-green known by photographers as cyan. It is important to bear in mind that this theory holds true only for colored light; the mixture of pigments is another matter.
Permanent—Raw sienna, burnt sienna, ultramarine blue across, cobalt blue across, raw umber, burnt umber, yellow ochre, Van Dyke brown, ivory, lamp black, vermilion. Semipermanent—Chrome yellow, green, cadmium yellow, Indian red, Venetian red. Fugitive—Carmine, crimson lake, madders, Prussian blue across, cerulean blue across. White lead makes a poor chemical mixture when combined with ultramarine blue across, cobalt blue across, English vermilion, and chrome yellows. When using oil paints, it is better to combine these pigments with zinc white for tinting.
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