Blue vs. Indigo

Blueadjective

Of the colour blue.

Blueadjective

(informal) Depressed, melancholic, sad.

Blueadjective

Pale, without redness or glare; said of a flame.

Blueadjective

(politics) Supportive of, run by (a member of), pertaining to, or dominated by a political party represented by the colour blue.

Blueadjective

Supportive of, run by (a member of), pertaining to, or dominated by the Democratic Party.

Blueadjective

Supportive of or related to the Liberal Party.

Blueadjective

(astronomy) Of the higher-frequency region of the part of the electromagnetic spectrum which is relevant in the specific observation.

Blueadjective

(of steak) Extra rare; left very raw and cold.

Blueadjective

(of a dog or cat) Having a coat of fur of a slaty gray shade.

Blueadjective

(archaic) Severe or overly strict in morals; gloomy.

Blueadjective

literary; bluestockinged.

Blueadjective

(particle physics) Having a color charge of blue.

Blueadjective

(entertainment) Risque or obscene

Blueadjective

Pornographic or profane.

Bluenoun

The colour of the clear sky or the deep sea, between green and violet in the visible spectrum, and one of the primary additive colours for transmitted light; the colour obtained by subtracting red and green from white light using magenta and cyan filters; or any colour resembling this.

Bluenoun

A blue dye or pigment.

Bluenoun

Any of several processes to protect metal against rust.

Bluenoun

Blue clothing

Bluenoun

(in the plural) A blue uniform. See blues.

Bluenoun

(slang) A member of law enforcement

Bluenoun

The sky, literally or figuratively.

Bluenoun

The ocean; deep waters.

Bluenoun

Anything blue, especially to distinguish it from similar objects differing only in color.

Bluenoun

A dog or cat with a slaty gray coat.

Bluenoun

(snooker) One of the colour balls used in snooker, with a value of five points.

Bluenoun

Any of the butterflies of the subfamily Polyommatinae in the family Lycaenidae, most of which have blue on their wings.

Bluenoun

A bluefish.

Bluenoun

An argument.

Bluenoun

A liquid with an intense blue colour, added to a laundry wash to prevent yellowing of white clothes.

Bluenoun

(British) A type of firecracker.

Bluenoun

(archaic) A pedantic woman; a bluestocking.

Bluenoun

(particle physics) One of the three color charges for quarks.

Blueverb

(ergative) To make or become blue.

Blueverb

To treat the surface of steel so that it is passivated chemically and becomes more resistant to rust.

Blueverb

To brighten by treating with blue (laundry aid)

Blueverb

To spend (money) extravagantly; to blow.

Blueadjective

Having the color of the clear sky, or a hue resembling it, whether lighter or darker; as, the deep, blue sea; as blue as a sapphire; blue violets.

Blueadjective

Pale, without redness or glare, - said of a flame; hence, of the color of burning brimstone, betokening the presence of ghosts or devils; as, the candle burns blue; the air was blue with oaths.

Blueadjective

Low in spirits; melancholy; as, to feel blue.

Blueadjective

Suited to produce low spirits; gloomy in prospect; as, thongs looked blue.

Blueadjective

Severe or over strict in morals; gloom; as, blue and sour religionists; suiting one who is over strict in morals; inculcating an impracticable, severe, or gloomy mortality; as, blue laws.

Blueadjective

Literary; - applied to women; - an abbreviation of bluestocking.

Bluenoun

One of the seven colors into which the rays of light divide themselves, when refracted through a glass prism; the color of the clear sky, or a color resembling that, whether lighter or darker; a pigment having such color.

Bluenoun

A pedantic woman; a bluestocking.

Bluenoun

Low spirits; a fit of despondency; melancholy.

Blueverb

To make blue; to dye of a blue color; to make blue by heating, as metals, etc.

Bluenoun

the color of the clear sky in the daytime;

Bluenoun

blue clothing;

Bluenoun

any organization or party whose uniforms or badges are blue;

Bluenoun

the sky as viewed during daylight;

Bluenoun

used to whiten laundry or hair or give it a bluish tinge

Bluenoun

the sodium salt of amobarbital that is used as a barbiturate; used as a sedative and a hypnotic

Bluenoun

any of numerous small chiefly blue butterflies of the family Lycaenidae

Blueverb

turn blue

Blueadjective

having a color similar to that of a clear unclouded sky;

Blueadjective

used to signify the Union forces in the Civil War (who wore blue uniforms);

Blueadjective

low in spirits;

Blueadjective

characterized by profanity or cursing;

Blueadjective

suggestive of sexual impropriety;

Blueadjective

belonging to or characteristic of the nobility or aristocracy;

Blueadjective

morally rigorous and strict;

Blueadjective

causing dejection;

Blue

Blue is one of the three primary colours of pigments in painting and traditional colour theory, as well as in the RGB colour model. It lies between violet and green on the spectrum of visible light.

Indigonoun

A purplish-blue colour

Indigonoun

An indigo-colored dye obtained from certain plants (the indigo plant or woad), or a similar synthetic dye.

Indigonoun

An indigo plant, such as from species in genera Indigofera, Amorpha (false indigo), Baptisia (wild indigo), and Psorothamnus and Dalea (indigo bush).

Indigoadjective

having a deep purplish-blue colour

Indigonoun

A kind of deep blue, one of the seven prismatic colors.

Indigonoun

A blue dyestuff obtained from several plants belonging to very different genera and orders, such as, the woad, Isatis tinctoria (family Cruciferae), Indigofera suffroticosa, Indigofera tinctoria (family Leguminosae), Indigofera Anil, Nereum tinctorium, Polygonum tinctorium Ait. (family Polygonaceae), etc.; called also natural indigo. It is a dark blue earthy substance, tasteless and odorless, with a copper-violet luster when rubbed. Indigo does not exist in the plants as such, but is obtained by decomposition of the glycoside indican.

Indigoadjective

Having the color of, pertaining to, or derived from, indigo.

Indigonoun

a blue dye obtained from plants or made synthetically

Indigonoun

deciduous subshrub of southeastern Asia having pinnate leaves and clusters of red or purple flowers; a source of indigo dye

Indigonoun

a blue-violet color

Indigo

Indigo is a deep color close to the color wheel blue (a primary color in the RGB color space), as well as to some variants of ultramarine, based on the ancient dye of the same name. The word comes from the Latin for Indian as the dye was originally exported to Europe from India.