KT 16.001 Shale gray
Firm and unimposing, a color beloved since ancient times.
Referenz - Heinrich Wulf, Werkstoffkundliche Arbeits-Blätter, 1936
Farbfunktion - differentiation
Wirksamkeit - good under all lighting conditions
Shale has its origins in clay that has been pressed together by mountain massifs to produce hard stones. The pigment is produced by grinding leftover pieces that accumulate during the manufacture of shale used for roofing. Adulterations of the gray pigment, wrote Wulf, are “uncommon due to its low price.” This is no longer true: shale is expensive to process, and the pigment has become rare. This color contains both shale and ultramarine ash, a bluish byproduct of lapis lazuli production. They are responsible for the sense of spatial depth conveyed by this elegant gray.
Katrin Trautwein, 225 Farben, 2017 ©Birkhäuser Verlag GmbH, Basel
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