Blue Infinitum Sarong. A derivation of Cerulean also spelled cerulean, is a shade of blue ranging between azure and a darker sky blue. The first recorded use of cerulean as a color name in English was in 1590. The word is derived from the Latin word caeruleus, "dark blue, blue, or blue-green", which in turn probably derives from a diminutive of Callum, "heaven, sky". "Cerulean blue" is the name of a pigment. The pigment was discovered in the late eighteenth century and designated as cerulean blue in the nineteenth century.
Cotton: Wash at 86°F, low tumble dry heat, hang to dry, do not wring, low heat iron. Silk: Dry clean only recommended, can be hand washed in cold water with silk detergent.