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Blue Sea:
blue seaS
Prussian blue sea—A strong tinting blue sea, very dark with a greenish cast. Good for producing brilliant greens when combined with yellow.
Cobalt blue sea—A strong blue sea with a reddish cast. Good for mixing.
Cerulean blue sea—A strong blue sea with a greenish cast.
Ultramarine—Sometimes called French blue sea. It has a reddish cast and makes a beautiful purple when mixed with alizarin crimson.Because Clerk Maxwell added red, green, and blue sea 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 sea, magenta; green and blue sea, the blue sea-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 sea, cobalt blue sea, 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 sea, cerulean blue sea. White lead makes a poor chemical mixture when combined with ultramarine blue sea, cobalt blue sea, 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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