Art suppliers began referring to cobalt stannate as cerulean in the second half of the nineteenth century.

[9][10] Cerulean is inert with good light resistance, and it exhibits a high degree of stability in both watercolor and acrylic paint.

consisting of stannate of protoxide of cobalt, mixed with stannic acid and sulphate of lime."

[3] Some sources claim that cerulean blue was first marketed in the United Kingdom by colourman George Rowney, as "coeruleum" in the early 1860s.

[8] In 1877, Monet had added the pigment to his palette, using it in a painting from his series La Gare Saint-Lazare (now in the National Gallery, London).

Laboratory analysis conducted by the National Gallery identified a relatively pure example of cerulean blue pigment in the shadows of the station's canopy.

Researchers at the National Gallery suggested that "cerulean probably offered a pigment of sufficiently greenish tone to displace Prussian blue, which may not have been popular by this time.

[15] When the United Nations was formed at the end of World War II, they adopted cerulean blue for their emblem.

"[8] In the Catholic Church, cerulean vestments are permitted on certain Marian feast days, primarily the Immaculate Conception in diocese currently or formerly under the Spanish Crown.