Colour (noun) is the property of light perceived by the eye as red, blue, green, yellow, etc., determined by the wavelength of the light. As a verb, to colour means to apply colour to something. As an adjective, colour describes something that involves or reproduces colour. Note: this is the standard British English spelling; American English uses color.
What Does Colour Mean?
Colour entered English in the 13th century from Old French colour and Latin color (appearance, hue, complexion). It is one of the most fundamental words in the language, covering the physical phenomenon of light wavelengths, the perceptual experience of seeing hues, and a wide range of figurative uses — from describing a lively personality ("full of colour") to indicating slight illness ("a bit off-colour").
As a noun, colour is both countable ("the primary colours are red, yellow, and blue") and uncountable when referring to the general quality ("the room lacked colour"). As a verb, it is regular: colour, coloured, colouring. As an adjective, it precedes nouns it modifies: a colour photograph, a colour-coded system.
Learners whose first language uses a single root for all these functions often underestimate how many idiomatic phrases English has built around colour. Phrases like to see someone's true colours, with flying colours, or to colour someone's judgement extend the word well beyond its literal meaning into everyday idiom.
Etymology
From Old French colour, from Latin color (gen. coloris) meaning hue, tint, or outward appearance. The Latin root may be connected to celare (to conceal or cover), as colour was conceptualised as the visible surface that conceals inner substance. The word entered Middle English in the 13th century, and the British spelling with -our preserves the Old French ending, while American English simplified to -or following Noah Webster's spelling reforms of the early 19th century.
Example Sentences by Level
| Sentence | Level | Usage note |
|---|---|---|
| My favourite colour is blue. | A2 | colour as countable noun — everyday preference |
| She used colour-coded flashcards to help organise vocabulary by topic. | B1 | colour as modifier in compound adjective |
| The designer chose a warm colour scheme for the living room to make it feel more welcoming. | B1 | colour scheme — fixed collocation |
| Years of teaching had not coloured her enthusiasm for the subject; she remained as passionate as ever. | B2 | colour as verb — figurative: to influence or affect |
| The memoir is rich in local colour, evoking the sights, sounds, and atmosphere of 1950s Havana with vivid precision. | C1 | local colour — idiomatic: distinctive character of a place or time |
Collocations
| Collocation | Example |
|---|---|
| bright colour | Children are attracted to bright colours. |
| pale / pastel colour | She prefers pale colours for bedroom walls. |
| primary colour | Red, yellow, and blue are the primary colours. |
| colour scheme | The office has a neutral colour scheme. |
| colour-coded | The timetable is colour-coded by subject. |
| full colour | The brochure was printed in full colour. |
| off-colour | He looked a bit off-colour after the flight. |
| with flying colours | She passed her driving test with flying colours. |
| true colours | The crisis revealed his true colours. |
| colour-blind | About 8% of men are colour-blind. |
Usage Notes
Key Usage Points
British vs American spelling: In British English (and most other varieties), the correct spelling is colour. In American English it is color. Both forms are understood worldwide, but in formal British writing colour is required.
Noun vs verb: As a noun, colour describes a quality ("the colour of the sky"). As a verb, it means to apply colour ("she coloured the drawing") or, figuratively, to influence ("prejudice can colour your judgement"). The verb is regular: colour, coloured, colouring.
Countable vs uncountable: Colour is countable for specific hues ("three colours") and uncountable for the general quality ("a splash of colour", "full of colour"). Both patterns are correct depending on context.
Compound forms: Colour combines productively with other words: colour-blind, colour-coded, colour scheme, colour wheel, watercolour, multicolour, off-colour. Note that British English uses a hyphen in colour-coded and colour-blind.
Common Mistakes
Watch Out For
She wrote the answer with color pen. (American spelling in British context; also missing article)
She wrote the answer with a colour pen. (British spelling; add article before singular countable noun)
What is the colour of your hairs? (hair is uncountable in English)
What colour is your hair? (hair uncountable; colour used as pre-noun adjunct without article)
The room needs more colours to look lively.
The room needs more colour to look lively. (uncountable when referring to the general quality)