What does colourant mean?
A colourant is any substance used to impart colour to a material or product. The term covers a broad family of colouring agents — dyes, pigments, tints, and lakes — and appears most often in technical and commercial settings such as food production, cosmetics manufacture, textiles, paints, and plastics. A colourant may be natural, like beetroot extract or indigo, or synthetic, like the certified additives listed on packaged foods. In British English it is spelled with a "u" (colourant), while American English prefers "colorant." Because it is an umbrella term rather than a specific product, speakers often pair it with modifiers: "artificial colourants," "natural colourant," or "permitted colourant," particularly on ingredient labels where regulations require disclosure of every additive. The word carries no strong emotional charge; its connotations are neutral to slightly technical, though growing consumer interest in clean-label products has made "free from artificial colourants" a familiar marketing phrase. It is a precise, useful word for anyone discussing how everyday goods get their colour.
nounA substance used to add colour to something, such as a dye, pigment, or tint, especially in food, cosmetics, textiles, or other manufactured products.
- A substance, such as a dye or pigment, added to food, cosmetics, fabrics, or other materials to give them colour.
"The manufacturer replaced the artificial colourant in the sweets with a beetroot-derived alternative."
"Regulators require that any synthetic colourant added to the drink be clearly listed on the label."
"The weaver selected a natural colourant derived from indigo to achieve the deep blue she wanted."
The plural is regular and is common when discussing multiple additives or a class of substances, as on labels or in scientific writing.
"Several permitted colourants appear on the ingredient list, including lutein and anthocyanins."
That bright red in your strawberry yoghurt might once have come from crushed cochineal insects — a colourant humans have been harvesting for centuries.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of colourant
Colourant derives from French "colorant," the present participle of "colorer" (to colour), which traces back through Old French to Latin "colorare," from "color" meaning hue or complexion. English adopted the noun in the early nineteenth century as industrial chemistry expanded the range of available dyes and pigments. Its cognates include "colour" itself and the verb "to color," all stemming from the same Latin root, making it part of a large family of colour-related words shared across Romance languages and English.
Related word forms
How colourant is actually used
"Colourant" is the standard British spelling; "colorant" is preferred in American English. The word is common in technical, regulatory, and commercial contexts (food labelling, cosmetics, textiles) and is slightly more formal than everyday words like "dye" or "food coloring."
Easily confused with colourant
Current means flowing or present/up-to-date; colourant is a substance that adds colour — they merely sound somewhat similar.