Colours in Italian: Agreement, Invariable Colours and Idioms

🇮🇹 Leggi questo articolo in italiano

By Rossana Pazzaglia, native Italian teacher with a CEDILS certification in teaching Italian to foreigners (Ca’ Foscari University of Venice) · Updated 19 October 2026

Colours are among the first words you learn in a language, because we use them all the time: to describe clothes, objects, people, even moods. In Italian they have one important feature: they are adjectives, so they usually agree with the noun. But not always! And it’s exactly that “not always” that trips up almost everyone at the beginning.

Basic colours

Italian	English
rosso	red
arancione	orange
giallo	yellow
verde	green
azzurro	light blue, sky blue
blu	blue, dark blue
viola	purple
rosa	pink
marrone	brown
grigio	grey
nero	black
bianco	white

Fun fact: for Italians azzurro and blu are two different colours, not two shades of the same one. That’s why the national football team is called “gli Azzurri”.

Group 1: colours ending in -o (four forms)

rosso, giallo, nero, bianco, grigio, azzurro change like regular -o adjectives:

• il libro rosso – i libri rossi (the red book / books)
• la macchina rossa – le macchine rosse (the red car / cars)

Watch the plurals: bianco → bianchi, bianche; grigio → grigi, grigie.

Group 2: colours ending in -e (two forms)

verde, arancione, marrone have one singular and one plural form, the same for masculine and feminine:

• il prato verde – i prati verdi (the green lawn / lawns)
• la mela verde – le mele verdi (the green apple / apples)
• la borsa marrone – le borse marroni (the brown bag / bags)

Group 3: invariable colours

Some colours never change: blu, rosa, viola, lilla, beige, fucsia. Many come from the names of flowers (la rosa, la viola) or from other languages.

• la maglia blu – le maglie blu
• il vestito rosa – i vestiti rosa
• la sciarpa viola – le sciarpe viola

Shades: light and dark

With chiaro (light) and scuro (dark), the whole expression becomes invariable: una borsa verde scuro, due borse verde scuro; una camicia azzurro chiaro, tre camicie azzurro chiaro. The same goes for compound colours such as rosso fuoco (fire red), giallo limone (lemon yellow), verde bottiglia (bottle green).

Italian idioms with colours

• essere al verde: to be broke
• vedere tutto nero: to be pessimistic
• vedere la vita in rosa: to see life through rose-tinted glasses
• il principe azzurro: Prince Charming
• passare la notte in bianco: to have a sleepless night
• diventare rosso: to blush
• un giallo: a crime novel or thriller (from the yellow covers of a famous book series)

Blu: An Invariable Colour

The Treccani dictionary lists blu as an adjective and defines it as “dark azure, dark turquoise, in its various shades” ^[1]. In current usage it takes no endings, which is why you say la maglia blu and le maglie blu, never “blue” or “blui”.

Mini-Dialogue: In a Clothes Shop

Cliente: Buongiorno, vorrei una giacca blu scuro.
Commesso: Abbiamo questa e anche una verde bottiglia. Che taglia porta?
Cliente: La 48. Hanno anche le camicie azzurro chiaro?
Commesso: Certo, ecco due modelli.

Exercise 1

Complete with the right form of the colour:

1. Le scarpe (nero) ___
2. Le magliette (rosa) ___
3. I pantaloni (verde) ___
4. La giacca (blu) ___
5. Le camicie (bianco) ___

Answers: 1. nere – 2. rosa – 3. verdi – 4. blu – 5. bianche.

Exercise 2: find the mistake

1. Ho comprato due borse blue.
2. Le mele verde sono buone.
3. Una camicia rosso scuro.
4. I fiori rosi sono bellissimi.
5. Le scarpe marroni sono comode.

Answers: 1. blu (invariable). 2. verdi: verde has the plural in -i. 3. Correct: with scuro/chiaro the expression is invariable. 4. rosa (invariable). 5. Correct.

Think about it: describe in Italian the colours of the clothes you are wearing today, using at least one invariable colour and one colour with “chiaro” or “scuro”.

Colour and noun: a quick recap

Before moving on, here is the rule of thumb I give my students. First, look at the last letter of the colour. If it ends in -o, it has four forms (nero, nera, neri, nere). If it ends in -e, it has two forms (verde, verdi). If it is one of the “special” colours (blu, rosa, viola, beige), it does not change at all. Second, remember that in Italian the colour normally comes after the noun: una gonna rossa, not “a red skirt” in English word order.

Azzurro and blu: two different blues

English has one word, “blue”, for many shades; Italian separates them. Treccani defines azzurro as the colour of a clear sky, somewhere between celeste (lighter) and blu or turchino (darker), and it also lists shades such as azzurro chiaro, scuro and intenso ^[2]. The same entry explains two cultural uses. The first is the athlete who has worn the blue shirt in an Italian national team, which is why we say gli Azzurri. The second is il principe azzurro, the handsome and brave prince who, in many fairy tales, awakens the love of a poor girl ^[2]. So if you are looking for a navy jumper, ask for un maglione blu; if you want a sky-coloured one, ask for un maglione azzurro.

Rosa and arancione: two useful details

Rosa. Treccani describes the colour as a pale shade between white and red and says that, used as an adjective, it is invariable ^[3]. Its examples include una camicetta rosa, un nastro rosa and nuvole rosa. The word can also be used as a masculine noun: un rosa pallido (a pale pink) ^[3].

Arancione. Treccani defines it as the colour of a ripe orange, but more vivid, and gives examples such as una stoffa arancione and riflessi arancioni ^[4]. In other words, as an adjective it takes the plural in -i (due gonne arancioni), while the colour as a noun does not change: un bell’arancione ^[4].

Three idioms and their stories

• Essere al verde. Treccani explains that it means having no money left and suggests (the word is “probably”) that it comes from old candles, whose lower end was tinted green: when the flame reached the green, the candle was almost finished ^[5].
• Un giallo. It is a popular type of crime novel, called this way in Italy from the 1930s because such books were usually published with a yellow cover ^[6]. Today un giallo can also be a film or a TV series.
• Gli Azzurri. As seen above, the name comes from the blue shirt of Italian national teams ^[2].

Mini-dialogue 2: describing a new flat

Anna: Com’è la tua nuova casa?
Marco: Bellissima! Le pareti sono bianche, le tende sono verde scuro e il divano è grigio.
Anna: E la camera di tua figlia?
Marco: Ha i cuscini rosa, una lampada viola e due sedie arancioni.
Anna: Che bei colori!

Notice the pattern: pareti bianche (four forms), tende verde scuro (invariable shade), cuscini rosa and lampada viola (invariable), sedie arancioni (plural in -i).

Exercise 3

Write the colour in brackets in the correct form:

1. Ho comprato due gonne (arancione) ___.
2. Mi piacciono i fiori (viola) ___.
3. Le sue scarpe sono (grigio) ___.
4. Vorrei due camicie (azzurro chiaro) ___.
5. Le tende (verde scuro) ___ sono nuove.
6. I calzini (bianco) ___ sono nel cassetto.

Answers: 1. arancioni – 2. viola – 3. grigie – 4. azzurro chiaro – 5. verde scuro – 6. bianchi.

Common mistakes

• Adding an ending to invariable colours: le borse blui, i vestiti rosi. Correct: le borse blu, i vestiti rosa.
• Forgetting the plural of -e colours: le mele verde. Correct: le mele verdi.
• Changing both words of a shade: le tende verdi scure. Correct: le tende verde scuro.
• Spelling the plural of -co and -gio colours like English: bianci, grigii. Correct: bianchi, grigi.
• Placing the colour before the noun as in English: una rossa macchina. Correct: una macchina rossa.

Think about it

• Which colours in your language have no single equivalent in Italian, or the other way round? Is there an English word for azzurro?
• Do you have an idiom with a colour in your own language? Can you explain its origin as Treccani does for essere al verde?
• Describe your bedroom in four sentences, using one colour from each group (-o, -e, invariable).

Keep learning

• Italian definite and indefinite articles
• Italian numbers 0-100
• Gender and number of Italian nouns

Want to use colours in a real conversation, for example describing your clothes or your home? Book a free trial lesson, join the course waiting list or take the free level test.

Sources

• [1] “Blu”, Vocabolario Treccani online (accessed 6 October 2026)
• [2] “Azzurro”, Vocabolario Treccani online (accessed 6 October 2026)
• [3] “Rosa”, Vocabolario Treccani online (accessed 6 October 2026)
• [4] “Arancione”, Vocabolario Treccani online (accessed 6 October 2026)
• [5] “Verde”, Vocabolario Treccani online (accessed 6 October 2026)
• [6] “Giallo”, Vocabolario Treccani online (accessed 6 October 2026)

If you come across a colour idiom you don’t know, the online Treccani dictionary is a great place to start.