‘Rust' is a red color resembling iron oxide. It is a commonly used color on cars and appears roughly the same color as photographic safelights when used over a standard tungsten light source.

The first recorded use of rust as a color name in English was in 1692.^[2]

Rust is named after the resulting phenomenon of the oxidation of iron. The word 'rust' finds its etymological origins in the Proto-Germanic word rusta, which translates to "redness." The word is closely related to the term "ruddy," which also refers to a reddish coloring in an object.

• List of colors