cobalt blue

Definition of Cobalt Blue in English :

a shade of blue tinged with green

2. cobalt blue, cobalt ultramarine

greenish-blue pigment consisting essentially of cobalt oxide and alumina

WordNet Lexical Database for English. Princeton University. 2010.

Cobalt Blue

noun

1. Also called: Thénard's blue

any greenish-blue pigment containing cobalt aluminate, usually made by heating cobaltous sulphate, aluminium oxide, and phosphoric acid together

2.

a.

a deep blue to greenish-blue colour

b.

(as adjective)

a cobalt-blue car

1.

a dark-blue pigment consisting of a mixture of cobalt and aluminum oxides

2.

dark blue

n.

1. A blue to green pigment consisting of a variable mixture of cobalt oxide and alumina.

2. A moderate to deep vivid blue or greenish blue.