Are colours adjectives in French?

Yes. They follow the noun and agree with it in gender and number: une voiture rouge, des murs blancs, une nappe blanche. They can also become masculine nouns when you put an article in front: le bleu, le vert.

Why doesn't marron agree?

Because marron is really the noun for a chestnut. Des yeux marron is shorthand for eyes the colour of a chestnut, and there's only one chestnut in the comparison. The same logic covers orange, citron, noisette, and turquoise.

How do you say light blue and dark green in French?

Bleu clair and vert foncé, with no agreement at all: une jupe bleu clair, des feuilles vert foncé. Once a colour picks up a second word, the whole phrase freezes in the masculine singular.

Which colours from nouns do agree?

Rose, mauve, pourpre, fauve, and écarlate. They all began as nouns but have been adjectives long enough to be treated as ordinary ones: des joues roses, des rideaux mauves. It's a short list and worth memorising.

Do colours ever go before the noun?

Only for literary effect, as in les vertes prairies. In ordinary French the colour always follows: une prairie verte. Putting it first is noticeable in the way an unusual word order is noticeable in English poetry.

French grammar · Intermediate

French Colour Adjectives: Agreement, Position, and the Ones That Never Change

Written by Camille Laurent, Lead French Curriculum Editor · Reviewed May 2026

French colour words are adjectives, they follow the noun, and they agree with it. Two groups don't: colours borrowed from nouns such as orange and marron, and colours modified by a second word such as bleu clair. Those stay frozen in the masculine singular.

Elle porte une robe verte et des chaussures bleu marine.

She's wearing a green dress and navy blue shoes.

What it is

A colour word in French is an ordinary adjective: it comes after the noun and takes the noun's gender and number. The exceptions all come from the same source — a word that is really a noun in disguise can't behave like an adjective.

une voiture rouge, des yeux verts, une chemise blanche — a red car, green eyes, a white shirt.

How to spot it

Ask whether the colour word is also the name of a thing. Orange, marron, and citron are fruits and chestnuts before they are colours, and they keep their noun behaviour.

des gants noirs — black gloves (ordinary adjective, agrees)
des gants marron — brown gloves (from the noun for chestnut, invariable)
des yeux bleu clair — light blue eyes (modified colour, frozen)
des rideaux roses — pink curtains (rose has become a full adjective, so it agrees)

Rose, mauve, pourpre, fauve, and écarlate started as nouns too, but they've been adjectives for long enough that French now makes them agree.

Color Adjectives Quick Reference

Agreement forms for the most common colours

Masculine singular	Feminine singular	Masculine plural	Feminine plural
bleu	bleue	bleus	bleues
vert	verte	verts	vertes
gris	grise	gris	grises
blanc	blanche	blancs	blanches
violet	violette	violets	violettes
roux	rousse	roux	rousses
rouge, jaune, rose	rouge, jaune, rose	rouges, jaunes, roses	rouges, jaunes, roses
orange, marron	orange, marron	orange, marron	orange, marron

Common Color Adjectives Examples in French

Colours behaving normally, then not:

Ordinary Agreement

une porte verte: a green door
des murs blancs: white walls
une nappe blanche: a white tablecloth
des chaussettes noires: black socks

Colours ending in -e already, like rouge and jaune, only add -s in the plural. There's nothing extra to do in the feminine.

Colours Named After Things

des yeux marron: brown eyes
une écharpe orange: an orange scarf
des rideaux citron: lemon-yellow curtains
des coussins turquoise: turquoise cushions

The logic is that these phrases are shorthand: des yeux marron means eyes the colour of a chestnut, and the chestnut isn't plural.

Modified Colours Freeze

une jupe bleu clair: a light blue skirt
des feuilles vert foncé: dark green leaves
une veste bleu marine: a navy blue jacket
des cheveux châtain clair: light brown hair

The whole phrase behaves as one unit, so neither word takes an ending. Une jupe bleue claire is a spelling error.

Two Colours Together

une écharpe bleu-vert: a blue-green scarf
un drapeau rouge et blanc: a red and white flag
des chemises bleues et blanches: blue shirts and white shirts
des chaussures noir et blanc: black and white shoes

If each item is one mixed colour, everything stays invariable. If some items are one colour and some the other, both adjectives agree.

How Colour Agreement Works

One default rule and three exceptions, all of which come from the same underlying idea.

Colours Follow the Noun

Colour is a classifying property, and French puts classifying adjectives after the noun. Placing a colour in front is possible only in poetry, where it sounds deliberately marked.

un pull rouge et un manteau noir

a red jumper and a black coat

Noun first, colour second.

They Agree Like Any Other Adjective

Gender and number endings work exactly as they do for grand or petit, including the irregular feminines: blanc gives blanche, roux gives rousse, violet gives violette.

une chemise blanche et des chaussettes violettes

a white shirt and purple socks

Normal endings, normal irregulars.

A Colour That Is Also a Noun Doesn't Change

Orange, marron, citron, noisette, crème, saumon, and turquoise are nouns being used as colours. Since a noun can't agree with another noun, the phrase stays frozen in the masculine singular.

des chaussures marron et une chemise saumon

brown shoes and a salmon-pink shirt

Was it a thing first? Then it doesn't agree.

Adding a Second Word Freezes the Phrase

As soon as a colour is qualified by clair, foncé, vif, pâle, or another noun, the whole expression becomes a compound and stops agreeing. This applies even to colours that would otherwise agree perfectly.

des yeux bleu clair et des cheveux brun foncé

light blue eyes and dark brown hair

Two words → no endings at all.

Five Ex-Nouns Have Been Naturalised

Rose, mauve, pourpre, fauve, and écarlate also began as nouns, but they've been used as adjectives for so long that French now treats them as ordinary ones and makes them agree.

des fleurs roses et des rideaux mauves

pink flowers and mauve curtains

This list agrees. Learn it as a list.

Common Mistakes with Color Adjectives

Incorrect: des chaussures oranges — orange shoes

Correct: des chaussures orange — orange shoes

Orange is a fruit before it's a colour, so it can't take adjective endings. Compare des chaussures roses, where rose has been fully naturalised and does agree.

Incorrect: une robe bleue claire — a light blue dress

Correct: une robe bleu clair — a light blue dress

Adding clair turns the colour into a compound, and compounds don't agree. Both halves stay in the masculine singular however feminine the noun is.

Incorrect: une verte voiture — a green car

Correct: une voiture verte — a green car

Colours classify rather than evaluate, so they go after the noun. Putting the colour first is a direct transfer from English word order.

Incorrect: Elle a les cheveux blanc. — She has white hair.

Correct: Elle a les cheveux blancs. — She has white hair.

Cheveux is plural in French even when English treats hair as a mass noun, so the colour has to be plural too.

Beyond Description

Colours turn into nouns, into idioms, and into the standard way of talking about hair and eyes.

Colours as nouns

Any colour becomes a masculine noun when you put an article in front of it, whatever the gender of the thing it describes.

Le bleu te va bien.: Blue suits you.
Je préfère le vert.: I prefer the green one.
un rouge très sombre: a very dark red
Elle est habillée en noir.: She's dressed in black.

En plus a colour is the standard way to say dressed in or painted in: peint en blanc.

Hair and eyes

French uses avoir plus a definite article for physical description, not être. The colour agrees with the body part, which is plural more often than English expects.

Elle a les yeux verts.: She has green eyes.
Il a les cheveux gris.: He has grey hair.
Elle a les cheveux châtains.: She has chestnut brown hair.
C'est une rousse.: She's a redhead.

Cheveux is always plural in French, so any adjective describing hair is plural too.

Colour idioms

French assigns different meanings to colours than English does, so these have to be learned individually.

voir la vie en rose: to see life through rose-tinted glasses
rire jaune: to give a forced laugh
une nuit blanche: a sleepless night
avoir une peur bleue: to be terrified
être vert de rage: to be furious

Note that fear is bleue in French and rage is verte, neither of which lines up with English colour associations.

Color Adjectives FAQs

Are colours adjectives in French?: Yes. They follow the noun and agree with it in gender and number: une voiture rouge, des murs blancs, une nappe blanche. They can also become masculine nouns when you put an article in front: le bleu, le vert.
Why doesn't marron agree?: Because marron is really the noun for a chestnut. Des yeux marron is shorthand for eyes the colour of a chestnut, and there's only one chestnut in the comparison. The same logic covers orange, citron, noisette, and turquoise.
How do you say light blue and dark green in French?: Bleu clair and vert foncé, with no agreement at all: une jupe bleu clair, des feuilles vert foncé. Once a colour picks up a second word, the whole phrase freezes in the masculine singular.
Which colours from nouns do agree?: Rose, mauve, pourpre, fauve, and écarlate. They all began as nouns but have been adjectives long enough to be treated as ordinary ones: des joues roses, des rideaux mauves. It's a short list and worth memorising.
Do colours ever go before the noun?: Only for literary effect, as in les vertes prairies. In ordinary French the colour always follows: une prairie verte. Putting it first is noticeable in the way an unusual word order is noticeable in English poetry.