Cerulean is a range of colours from teal-blue, sky-blue, bright blue, or azure to deep cyan. The word cerulean comes from the Latin word caeruleum, which means "sky" or "heavens". This was in turn from Latin caeruleus deep blue: resembling the blue of the sky.
In classical times, this term was used to describe blue pigments, particularly mixtures of copper and cobaltousoxides, called genuine cerulean. These early attempts to create sky blue colours were often less than satisfactory due to greenish hues and lack of permanence. When the artificial pigment cerulean blue was invented people started using this instead.
The first recorded use of cerulean as a colour name in English was in 1590.[1]
Meaning of cerulean
Cerulean represents the "sky" or "heavens", or sometimes the ocean.