cobalt blue

noun

1. a deep blue to a strong greenish-blue color.
2. any of a number of pigments containing an oxide of cobalt.

cobalt blue

noun

1. Also calledThénard's blue any greenish-blue pigment containing cobalt aluminate, usually made by heating cobaltous sulphate, aluminium oxide, and phosphoric acid together
2. 1. a deep blue to greenish-blue colour
   2. ( as adjective )

      a cobalt-blue car

Word History and Origins

Origin of cobalt blue¹

First recorded in 1825–35

Example Sentences

Then it found him: an obsessive, cobalt-blue-eyed Scot by the name of Alex Ferguson.

From The Daily Beast

And, just look at "all the cobalt-blue energy on the runways."

From The Daily Beast

A mixture of cobalt blue and flowers of zinc with some yellow pigment.

From Project Gutenberg

The rich cobalt blue, called bleu de roi, of which there were two varieties, the darker being designated gros bleu.

From Project Gutenberg

He walked down wearily and said: "Cobalt blue" to his own door after a furtive look up and down the hall.

From Project Gutenberg

The decoration was painted in cobalt blue upon the unburned surface of the enamel.

From Project Gutenberg

A brilliant black may also be obtained by a mixture of cobalt blue with the oxides of manganese and iron.

From Project Gutenberg