Hair is the largest area of colour on a person and sits directly beside every collar and every pair of frames. It is the thing most personal-colour advice is actually reacting to, even when it claims to be reacting to something else.
Hair is modelled here as two observable properties — roughly how light it is and whether it leans warm or cool — because those are what the contrast arithmetic needs. Nothing about hair colour is used to infer anything else about a person, and none of it is a claim about health, genetics or ancestry.
Black
Roughly L12 · cool
The deepest thing in any outfit, and a large area of it. Black hair sets the outfit's darkest point before a single garment is chosen.
Everything worn is lighter than the hair, so the outfit's contrast range is effectively fixed at the top. Very deep clothing merges with it; pale clothing produces the highest contrast available.
Metals. Both silver and gold read clearly against it because the lightness gap is large either way. The choice is a temperature decision rather than a visibility one.
Eyewear. Black frames disappear into black hair at any distance. A frame that is lighter, or has any colour at all, keeps its shape.
The mistake most often made. Assuming black clothing coordinates because the hair is black. Two blacks in different fabrics rarely match, and the face ends up bracketed by two near-identical dark areas.
Very dark brown
Roughly L20 · warm
Reads as black indoors and shows its warmth in daylight, which means it behaves like two different hair colours depending on where the photograph is taken.
Nearly the same arithmetic as black, with slightly more room for a deep warm colour to relate rather than merge.
Metals. Warm metals pick up the brown that only shows in daylight; cool metals contrast with it. Both work — they emphasise different halves of what the hair does.
Eyewear. Tortoiseshell relates without vanishing, which black frames do not. A frame lighter than the hair keeps its outline.
The mistake most often made. Choosing everything under indoor light, where the hair reads black, and being surprised by how warm it looks in outdoor photographs.
Brown
Roughly L32 · warm
A genuinely mid-depth warm area. Unlike very dark hair it is not automatically the darkest thing present, so clothing can be deeper than it.
Both directions are available: clothing can be lighter or deeper than the hair, and each produces a different balance. This is the most flexible position in the range.
Metals. Warm metals coordinate; cool metals contrast on temperature. Neither is stronger, because the lightness gap is moderate either way.
Eyewear. A frame close in value to the hair will blend at the temples. Either clearly deeper or clearly lighter keeps the frame legible.
The mistake most often made. Treating mid-brown hair as neutral background. It has real warmth and it sits next to the face in every photograph.
Light brown
Roughly L45 · warm
Mid-light and warm, with enough lightness that deep clothing produces strong contrast and pale clothing produces very little.
Deep colours near the face make the hair read considerably lighter than it is; pale colours can out-light it and flatten the whole upper half.
Metals. Warm metals sit close to the hair's own value and temperature, which reads cohesive. Cool metals stand out more here than against darker hair.
Eyewear. A deep frame is a strong choice — it is the darkest thing in the region and defines the eye area clearly.
The mistake most often made. Wearing pale warm colours that land at the same lightness as the hair, which removes the boundary between hair and garment.
Dark blonde
Roughly L58 · neutral
Between light brown and blonde, often with both warm and ashy sections in the same head, and highly changeable with the season.
Mid-light, so deep clothing gives strong contrast and mid-tones give almost none. The mid-tone zone is the one to be careful about.
Metals. Neither temperature is obviously right, which makes this the hair colour where the metal decision is most genuinely open.
Eyewear. Mid-tone frames blend; deep or clear frames read clearly. Tortoiseshell can land at exactly the same value and disappear.
The mistake most often made. Choosing colours for the summer version of the hair and wearing them through a winter when it has gone several steps darker.
Blonde
Roughly L72 · warm
A light, usually warm area next to the face, and often the lightest thing in the outfit until a white shirt is introduced.
Deep clothing produces very high contrast, which is striking and can be severe. Pale clothing at a similar lightness produces almost none, which is soft and can be washed out.
Metals. Warm metals coordinate closely with warm blonde and can be hard to distinguish from it at a distance. Cool metals stay visible.
Eyewear. Almost any frame is visible against light hair, so the choice is genuinely free — deep frames define strongly, light frames stay quiet.
The mistake most often made. Wearing white or very pale cream next to the face, which is frequently lighter than the hair and leaves the hair looking dull by comparison.
Red
Roughly L42 · warm
The only hair colour in this list with substantial chroma of its own. It is not a neutral background — it is an active colour in every outfit.
Because the hair carries real saturation, hue relationships matter here in a way they do not for brown or blonde. Greens sit opposite it and intensify it; oranges and warm reds sit beside it and can compete with it.
Metals. Warm metals sit in the hair's own hue family, which is very cohesive and occasionally too much of one idea. Cool metals contrast clearly.
Eyewear. Green and tortoiseshell frames are the conventional pairing, and the mechanism supports it — green opposes the hair's hue and tortoiseshell relates to it without matching.
The mistake most often made. Wearing a red or orange that lands near the hair's own hue without matching it, which is the near-miss problem applied to something you cannot take off.
Auburn
Roughly L30 · warm
Deeper and browner than red, with the red content still clearly present. Sits between brown and red in both lightness and chroma.
Deep enough to be the darkest thing in a light outfit and chromatic enough to have a hue relationship with what is worn. Both axes are live.
Metals. Warm metals — particularly copper and rose gold — sit almost inside the hair's own colour, which is either beautifully cohesive or indistinguishable depending on the light.
Eyewear. Deep green and dark tortoiseshell both work: one opposes the hue, the other relates to it at a different value.
The mistake most often made. Confusing it with chestnut and using advice for one on the other. Auburn carries noticeably more red chroma; chestnut is browner and cooler, and the two respond differently to green.
Grey
Roughly L62 · cool
A mid-light, low-chroma, cool area — genuinely close to a neutral, which is rare in hair and useful in an outfit.
Deep colours produce strong contrast; the hair has enough lightness to be clearly separate from most clothing. Mid-tone cool colours can merge with it.
Metals. Silver and cool metals coordinate almost exactly; warm metals contrast on temperature, which is often the more interesting choice.
Eyewear. Deep frames give the strongest definition. Silver frames coordinate with the hair to the point of blending at a distance.
The mistake most often made. Being told to avoid grey clothing. A cool mid-grey garment and grey hair can look extremely coherent — the thing to avoid is landing at exactly the same lightness, not the colour itself.
White
Roughly L85 · cool
The lightest hair there is, and usually the lightest thing in the whole outfit including a white shirt.
Almost everything worn is deeper than the hair, so the contrast range is fixed at the bottom rather than the top. Deep colours read very strongly.
Metals. Cool metals sit close to the hair in both temperature and lightness; warm metals stand out clearly against it.
Eyewear. A deep frame is a very strong statement against white hair, because it is the single darkest element in the region.
The mistake most often made. Avoiding strong colour on the assumption that white hair calls for restraint. High contrast is what white hair does most naturally, and deep saturated colours are unusually effective with it.
Dyed or vivid
Roughly L45 · variable
A deliberately chosen, often highly saturated colour occupying a large area right at the top of the outfit. It behaves like a garment rather than like hair.
This is the one case where the hair is the anchor colour and the clothing has to react to it, rather than the other way round. Treat it exactly as you would treat a strongly coloured top.
Metals. Whichever metal shares the hair's temperature will coordinate; the other will contrast. The hair's hue is the deciding input, not any property of the person.
Eyewear. A neutral frame keeps the hair as the single point of colour. A coloured frame introduces a second, which needs to relate to the first deliberately.
The mistake most often made. Planning the outfit and then treating the hair as an accessory. It is usually the most saturated thing present and should be chosen around, not around.