The name "Cerulean" comes from Latin caelum = sky (this is the most likely source).
Discovered in 1805 by Andreas Höpfner, the pigment originally referred to as cerulean blue (or corruleum blue) was first marketed in 1860 as "coeruleum" by George Rowney of the United Kingdom. The primary chemical constituent of the pigment is cobalt(II) stannate.
2. The color usually used to describe Naruto Uzumaki's (from the Japanese animation NARUTO by Kishimoto Masashi) eye color.
1. The painter used cerulean blue for her skies, because it lacked any green hues and retained it's color the best of any other blues she had.
2. Aaa, his cerulean blue eyes just devour your soul ♥