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

Of course, in the fashion world, an item of clothing can't just be blue, so Laws says he thinks cornflower and cobalt blue will make a particular appearance across shows.

From BBC

Five feet tall, the cobalt blue stoneware figure of a lifesize headless women in a voluminous, bell-shaped skirt shows her cupping aggressive, bullet-like breasts in her hands.

From Los Angeles Times

Another of them, rendered almost invisibly in shellac on deep cobalt blue moiré, circles around to give the exhibition its trenchant title: “Now then, as I was about to say …”

From Los Angeles Times

After a few blasts of a blow torch and several trips back and forth to the furnace, the red-hot glass on the rod turns cobalt blue and forms what will eventually become a 7-inch vase.

From Los Angeles Times

Many of the brilliant blue pigments -- like those in antique Chinese porcelain or works by Claude Monet -- make use of cobalt-based compounds, including the famous "cobalt blue."

From Science Daily