Maroon (US: UK: /məˈruːn/ mə-ROON, Australia: /məˈroʊn/ mə-ROHN) is a brownish crimson color that takes its name from the French word marron, meaning chestnut. Marron is also one of the French translations for "brown".

Terms describing interchangeable shades, with overlapping RGB ranges, include burgundy, claret, mulberry, and crimson.

Different dictionaries define maroon differently. The Cambridge English Dictionary defines maroon as a dark reddish-purple color while its "American Dictionary" section defines maroon as dark brown-red. Lexico online dictionary defines maroon as a brownish-red. Similarly, Dictionary.com defines maroon as a dark brownish-red. The Shorter Oxford English Dictionary describes maroon as "a brownish-crimson or claret colour," while the Merriam-Webster online dictionary simply defines it as a dark red.

In the sRGB color model for additive color representation, the web color called maroon is created by turning down the brightness of pure red to about one half. It is also noted that maroon is the complement of the web color called teal.

Maroon is French marron ("chestnut"), itself from the Italian marrone that also means chestnut and brown (but the color maroon in French is bordeaux, which likely stems from the French wine of the same name) from the medieval Greek maraon.

The first recorded use of maroon as a color name in English was in 1789.

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