indigo blue

American  

noun

1. indigo.

2. Also called indigo, indigotin.  a dark-blue, water-insoluble, crystalline powder, C 16 H 10 N 2 O 2 , having a bronzelike luster, the essential coloring principle of which is contained along with other substances in the dye indigo and which can be produced synthetically.

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indigo blue British  

noun

1. the full name for indigo indigo

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Other Word Forms

• indigo-blue adjective

Etymology

Origin of indigo blue

First recorded in 1705–15

Example Sentences

Through the window of an upper floor office in West Hollywood, the sky changed from cyan to navy and then indigo blue.

From Los Angeles Times • Nov. 14, 2024

Models showcased dresses in indigo blue, on a deep blue catwalk under the cavernous reinforced concrete dome of the futuristic building designed by Brazilian architect Oscar Niemeyer.

From Reuters • Sep. 25, 2023

Aside from traditional colors like white, biscuit and gray, newer cast-iron sink colors can include indigo blue, black plum and caviar.

From Seattle Times • Apr. 18, 2022

Leather skins lie on the roofs, drying in the sun and men expertly step in and out of the circular vats of dye: turmeric yellow, indigo blue and poppy red.

From The Guardian • Apr. 28, 2019

There are a hundred kinds of grass out there, grasses as yellow as lemon and as dark as indigo, blue grasses and orange grasses and grasses like rainbows.

From "A Game of Thrones" by George R.R. Martin