| 释义 | cobalt blue noun
 1.
 a.  : a permanent greenish blue pigment consisting essentially of cobalt oxide and alumina — called also cobalt ultramarine, King's blue
 b.  : powder blue
 2.  : a strong greenish blue that is bluer and deeper than grotto, greener, lighter, and stronger than average cerulean blue (sense 1a), and bluer, lighter, and stronger than indigo carmine — called also cobalt ultramarine, Hungary blue, Leithner's blue, Leyden blue, Olympic blue, Thenard's blue, Venetian blue
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