Formal:
* Cheveux courts châtains: This is the most literal and formal translation. "Châtain" refers to a chestnut brown color.
* Cheveux courts brun foncé/brun clair/brun moyen: You can use "brun foncé" (dark brown), "brun clair" (light brown), or "brun moyen" (medium brown) to specify the shade.
Informal:
* Cheveux courts marrons: "Marrons" is a more informal term for brown.
* Cheveux courts bruns: This is a shorter and more casual way to say it.
Example sentences:
* Elle a de cheveux courts châtains. (She has short chestnut hair.)
* Il a des cheveux courts bruns. (He has short brown hair.)
* Elle a des cheveux courts marrons clairs. (She has light brown short hair.)
You can also describe the hairstyle in more detail, such as "Cheveux courts et bouclés" (short and curly hair) or "Cheveux courts et raides" (short and straight hair).