Also described as: chestnut hair, brunette
A mid-depth brown, one of the most common hair colours worldwide.
typical range
An illustrative approximation, not a fixed definition.
Ranges from warm chestnut to a cooler, more neutral brown.
Natural highlights from sun exposure are common and visible.
Hair colour, including grey and white hair, is not a reliable indicator of age and is never presented here as something to correct — it's one more colour to plan around, the same as any other.
Styling ideas below are optional and editorial — never rules, and never a claim that one colour choice is objectively correct for anyone.

This kind of standardised swatch scale (used in anthropological and forensic hair-colour classification) shows just how continuous real hair colour is — any named category like 'blonde' or 'brown' actually spans a wide, gradual range.
This is a standardised scientific/anthropological reference scale of real hair samples, not a styled photo — even so, the same lighting and camera limitations apply to how accurately its colours are reproduced here.Photo: “Fischer-Saller scale of hair color” by GPM (Fischer-Saller scale); Commons upload by user 21775198.138-dopisnik, CC BY-SA 4.0, via Wikimedia Commons.
Mid-brown hair sits at the point where interior colour and surface shine contribute roughly equally. There is enough eumelanin to give a clear brown, but little enough that light passing through the cortex adds noticeable colour everywhere, not just in sun. Small amounts of pheomelanin, the red-yellow pigment, often ride alongside and set whether the brown looks golden, reddish or ashy. Because both mechanisms are visible at once, mid-brown shows the most variation between highlight, midtone and shadow of any hair shade — a single head can span several named browns.
Light and shine: Shadowed underlayers can look a full shade darker than the sunlit top, so brown hair photographs very differently depending on whether the light comes from above, behind or the side.
Sources: MedlinePlus Genetics: Is hair color determined by genetics?; Human hair color; Light Scattering from Human Hair Fibers (Marschner, Jensen, Cammarano, Worley & Hanrahan, SIGGRAPH 2003)