Cutting Edge ColorWebinar series |
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Recent scientific examination of Van Gogh’s Irises revealed that the painting’s iris flowers, which today appear blue, were once purple. A key finding of the study was the identification and mapping of the light-sensitive red pigment geranium lake, which was mixed with three blue pigments—cobalt blue, ultramarine, and Prussian blue—to create the various shades found in the irises. When initially applied, the mixture of red geranium lake with the blue pigments would have created shades of purple. But, how purple? |
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