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.

---

indigo blue British  

noun

1. the full name for indigo indigo

---

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

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

With cyanotypes, also called sun prints, your leaf makes a white silhouette on photo-chemical-treated paper or fabric that turns the deepest indigo blue.

From Seattle Times

Even the seats lining the sides are the original indigo blue of the luxury liner company.

From Literature

It gives me a twinge of sadness, of missing my mother, to see their colorful petticoats—indigo blue and saffron yellow—and white coifs.

From Literature