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

“Japanese Book” portrays a 19th-century book whose creased and worn indigo blue cover seems like a coda to Ms. Celmins’s images of night skies, waves and clouds.

From New York Times • Sep. 26, 2019

I know that in real life the bloomers on Mrs. Smeath are an intense indigo blue that took me weeks to get right, a blue that appears to radiate a dark and stifling light.

From "Cat's Eye" by Margaret Atwood