cerulean

Meanings

1. 1
   adj

   deep or vivid sky-blue, sometimes with a slight greenish tone

   A cerulean band of water appeared beyond the dark headland.

2. 2
   noun

   a deep sky-blue or blue-green color

   The painter mixed white into the cerulean to lighten the distant sky.

From Latin caeruleus, 'dark blue, blue-green, or sky-colored,' with the English suffix -an. Ancient writers connected caeruleus with caelum, 'sky or heaven,' though the deeper origin is uncertain. English cerulean first described the color of the sky and sea before becoming a noun for the hue itself.

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