* καστανός (kastanos): This is often used for chestnut brown, and is a good general option for many shades of brown.
* καφέ (kafe): This word literally means "coffee," but is commonly used to describe brown, especially a darker brown.
* χάλκινος (chalkinos): This refers to a bronze or copper color, which could be considered a shade of brown.
The best choice will depend on the context and the specific shade of brown you are trying to describe.