Is it “color” or “colour”? If you have ever hesitated over that single letter “u,” you are not alone. This is one of the most famous spelling differences in English, and unlike many confusing pairs, there is no single right answer — both spellings are correct, but in different places.
The short version: color is the American English spelling, and colour is the British English spelling. They mean exactly the same thing, sound exactly the same, and work the same way in sentences. The only thing that changes is where your readers live.
In this guide, we will explore the difference between color and colour, explain why English ended up with two spellings, and show you how to choose the right one every time. You will also find a comparison table, plenty of examples, common mistakes to avoid, and answers to the questions people ask most about this pair.
The Quick Answer: Color or Colour?
Both “color” and “colour” are correct English. Use color (no “u”) when you write in American English — for US schools, businesses, publications, and websites. Use colour (with “u”) when you write in British English — for the UK, Canada, Australia, New Zealand, and most other English-speaking countries.
The difference is purely regional spelling, not meaning. A “red color” and a “red colour” are the same red. The two forms are pronounced identically, and they follow the same grammar rules. What matters most is consistency: pick one spelling and stick with it throughout your document.
This pair belongs to a large family of American/British spelling differences. If you have ever wondered about pairs like this before — similar to the gray or grey question — the logic here is exactly the same: one word, two regional spellings, and your audience decides which to use.
What Does “Color” Mean?
“Color” is a noun and a verb that refers to the visual quality of something — the way it looks in terms of hue, shade, or tint. Red, blue, green, and yellow are all colors. As a verb, “to color” means to add shade or tint to something, as in “the child colored the picture.”
“Color” as a Noun
As a noun, “color” describes the characteristic appearance of things as seen through light. You might talk about your favorite color, the color of a car, or the colors of a flag. It can also be used figuratively: a story can have “color,” meaning liveliness or vivid detail, and someone can “show their true colors,” meaning reveal their real character.
In American writing, this spelling appears everywhere from crayon boxes to corporate branding. The phrase “color palette,” the “color wheel” in art class, and “color commentary” in sports broadcasting all use the American form. If your audience is in the United States, “color” will always look natural to them.
“Color” as a Verb
As a verb, “color” means to give something a shade or tint. Children color with crayons, adults color their hair, and sunsets color the sky. The verb also works figuratively: an experience can “color your judgment,” meaning it influences how you see things. All the related forms — colored, coloring, colorful — follow the American spelling pattern.
American style guides, including APA and the Chicago Manual of Style, prescribe “color” and its derivatives. If you are writing for a US publication, an American university, or an American company, “color” is not just preferred — it is expected. Using “colour” in these contexts looks like an error to American readers, even though it is perfectly correct elsewhere.
What Does “Colour” Mean?
“Colour” means exactly the same thing as “color.” It is the standard spelling in British English and in most other varieties of English around the world, including Canadian, Australian, New Zealand, Indian, and South African English. Every definition, usage, and figurative meaning that applies to “color” applies equally to “colour.”
“Colour” as a Noun
In British English, you write about your favourite colour, the colour of the sky, and the colours of the national flag. The figurative uses are identical too: “to show one’s true colours” and “to add colour to a story” are standard British phrases. The only difference from the American form is the extra “u.”
British publications, schools, and government documents all use “colour” consistently. The BBC, The Guardian, and Oxford University Press use this spelling as a matter of course. For readers in the UK and the Commonwealth, “colour” looks correct and “color” looks American — which, depending on context, can read as a mistake or simply as a foreign spelling.
“Colour” as a Verb
As a verb, “colour” works just like “color”: to colour a drawing, to colour one’s hair, to be coloured by experience. The related forms keep the “u” throughout: coloured, colouring, colourful, discolour. This consistency is important — mixing “color” with “colourful” in the same document is one of the most common errors writers make with this pair.
Note that some words keep the “u” in both varieties of English. “Glamour,” for example, is spelled with a “u” even in American English, because it has a different etymological history. But “colour” itself follows the standard pattern: Americans drop the “u,” everyone else keeps it.
Why Are There Two Spellings?
The split between “color” and “colour” is a story about history, dictionaries, and national identity. Understanding it makes the whole family of American/British spelling differences much easier to remember.
Noah Webster and American Simplification
The American spelling “color” took hold largely because of Noah Webster, the lexicographer behind Webster’s Dictionary. In the early 1800s, Webster deliberately simplified many English spellings to create a distinct American standard. He dropped what he saw as unnecessary letters: “colour” became “color,” “honour” became “honor,” and “favour” became “favor.”
Webster believed simpler spellings were more logical and more democratic — easier for ordinary people to learn. His dictionary was enormously influential in American schools, and within a few generations, the simplified forms were the unquestioned American standard. The change was intentional, systematic, and political: a young nation spelling words its own way.
The British Preference for Tradition
British English kept the older spellings, which came to English through French. “Colour” reflects the French influence on the language after the Norman Conquest, and British writers saw no reason to change a spelling that had centuries of tradition behind it. The “u” in “colour” is a small link to the word’s history.
Over time, the spelling itself became a marker of identity. Using “colour” signals British (or Commonwealth) English just as surely as an accent signals where a speaker is from. Style guides like Oxford spelling preserve the “-our” endings as a matter of standard, and British readers expect them.
The Same Pattern in Other Words
“Color” and “colour” are not alone. The same American/British split appears in a whole family of words, and learning them as a group makes each one easier. Here are the most common pairs that follow the “-or” versus “-our” pattern.
- favor / favour — “Do me a favor” (US) vs “Do me a favour” (UK)
- honor / honour — “a man of honor” (US) vs “a man of honour” (UK)
- behavior / behaviour — “strange behavior” (US) vs “strange behaviour” (UK)
- neighbor / neighbour — “my neighbor” (US) vs “my neighbour” (UK)
- labor / labour — “manual labor” (US) vs “manual labour” (UK)
- humor / humour — “sense of humor” (US) vs “sense of humour” (UK)
- flavor / flavour — “vanilla flavor” (US) vs “vanilla flavour” (UK)
Once you see the pattern, you can predict the British spelling of any American “-or” word: just add the “u.” And going the other direction, drop the “u” to Americanize a British “-our” word. It is one of the most reliable patterns in English spelling.
Color vs Colour: Comparison Table
This side-by-side comparison summarizes everything that separates — and unites — these two spellings.
| Feature | Color | Colour |
|---|---|---|
| Correct spelling | Yes | Yes |
| English variant | American English | British English |
| Used in | United States | UK, Canada, Australia, New Zealand, India, South Africa |
| Meaning | Hue, shade, visual appearance | Hue, shade, visual appearance (identical) |
| Pronunciation | Identical | Identical |
| Part of speech | Noun and verb | Noun and verb |
| Related forms | colored, coloring, colorful | coloured, colouring, colourful |
| Example | Her favorite color is blue. | Her favourite colour is blue. |
Notice the key row: both spellings are correct. The choice between them is never about right versus wrong — it is about matching your readers’ expectations.
Which Spelling Should You Use?
Choosing between “color” and “colour” comes down to three questions: who is reading, what the style guide says, and what you have already used in the document.
Match Your Audience
The simplest rule is to match your readers. Writing for Americans? Use “color.” Writing for British, Canadian, Australian, or international readers? Use “colour.” If you are writing for a global website, consider which variety of English the site uses overall and follow that. Many international publications choose British spelling as a neutral default, while many global brands choose American spelling for simplicity.
When in doubt, look at the publication or organization you are writing for. Universities, journals, and companies usually specify their preferred English variant in their author guidelines. Following that guidance removes all guesswork.
Follow the Style Guide
Major style guides have clear positions. APA Style and the Chicago Manual of Style use American English, so “color” is correct under both. Oxford style and most UK publishing houses use British English, so “colour” is correct there. Academic writers should check their target journal’s guidelines before submitting, since the wrong variant can look careless to an editor.
Stay Consistent Above All
Whatever you choose, use it consistently. Mixing “color” and “colour” in the same document is the real mistake with this pair. It signals carelessness more than either spelling choice does. The same goes for related words: do not write “color” in one paragraph and “favourite” in the next.
A practical tip: set your word processor’s language to match your chosen variant (English US or English UK). The spellchecker will then flag the wrong variant automatically, catching inconsistencies you might miss. This one setting prevents most color/colour errors before they happen.
Common Mistakes to Avoid
Since both spellings are correct, the mistakes here are about usage and consistency rather than the spelling itself.
- Mixing both spellings in one document: Pick “color” or “colour” and use it throughout. Switching between them looks unprofessional.
- Mixing variants in related words: “Color” goes with “favorite” and “behavior”; “colour” goes with “favourite” and “behaviour.” Keep the whole family consistent.
- Using the wrong variant for your audience: “Colour” in a US job application or “color” in a UK university essay can both be marked wrong by readers following their local standard.
- Changing spellings in quotations: Never “correct” the spelling inside a direct quote. If a British author wrote “colour,” keep “colour” even in an American publication.
- Assuming one is more formal: Neither spelling is more formal or more correct. The idea that “colour” is fancier is a myth — it is simply British.
- Forgetting proper nouns: Brand names, titles, and place names keep their original spelling. “Color Me Beautiful” and “The Colour Purple” are both correct as written.
These consistency rules apply to every American/British pair, from effect or affect style word choices to spelling variants. Build the habit once, and it serves you across your entire vocabulary.
Examples in Sentences
Here are natural examples showing both spellings in action. Notice that the sentences are identical apart from the regional spelling — the grammar and meaning never change.
- The color of the sky changed as the sun set. (American)
- The colour of the sky changed as the sun set. (British)
- She painted her bedroom a bright color. (American)
- She painted her bedroom a bright colour. (British)
- The artist mixed several colors on her palette. (American)
- The artist mixed several colours on her palette. (British)
- His stories add a lot of color to the conversation. (American)
- His stories add a lot of colour to the conversation. (British)
- The leaves change color in the autumn. (American)
- The leaves change colour in the autumn. (British)
- What is your favorite color? (American)
- What is your favourite colour? (British)
Color and Colour in Names, Titles, and Brands
One place where the color/colour choice gets interesting is in proper nouns. Book titles, brand names, and product names keep their original spelling no matter where they are published. “The Color Purple” is the title of Alice Walker’s novel in every country, and a British writer quoting it should not change it to “The Colour Purple.”
The same rule protects brand names. A company called “ColorTech” keeps its spelling on its UK website, just as “ColourWorks” would keep its “u” on an American site. This is standard practice in publishing: you never alter the spelling inside a proper noun to match your own variant. When you are unsure, check the official name and copy it exactly.
This habit of preserving original spellings also applies to quotations. If you quote a British source in an American article, leave “colour” as the author wrote it. Changing it would misrepresent the source. Consistency matters in your own words; fidelity matters in other people’s.
Frequently Asked Questions
Is it “color” or “colour”?
Both are correct. “Color” is the American English spelling and “colour” is the British English spelling. They mean exactly the same thing and are pronounced the same way. Choose the one that matches your audience and use it consistently.
Which countries use “colour” instead of “color”?
“Colour” is standard in the United Kingdom, Canada, Australia, New Zealand, Ireland, India, South Africa, and most other Commonwealth countries. “Color” is standard in the United States. Some countries, like Canada, officially prefer “colour” but encounter “color” frequently because of American media influence.
Do “color” and “colour” have different meanings?
No. There is no difference in meaning whatsoever. Both refer to the visual quality of something — its hue, shade, or tint — and both can be used as a verb meaning to add shade or tint. The difference is purely a matter of regional spelling convention.
Can I use both spellings in the same document?
You should not. Consistency is the most important rule with this pair. Mixing “color” and “colour” in one document looks careless and unprofessional. Pick the spelling that suits your audience, set your spellchecker to the matching language variant, and stick with it throughout.
Why does American English drop the “u” in “colour”?
The American spelling comes from Noah Webster, the early American lexicographer who deliberately simplified many English spellings in his dictionary. He removed letters he considered unnecessary, turning “colour” into “color,” “honour” into “honor,” and “favour” into “favor.” American schools adopted his spellings, and they became the national standard.
Conclusion
The color versus colour question has a reassuring answer: both spellings are correct. Color is American, colour is British, and they are identical in meaning, pronunciation, and grammar. Your only real job is to know your audience, follow the relevant style guide, and stay consistent from the first sentence to the last.
This pair is also your key to a whole family of American and British spelling differences, from favor/favour to behavior/behaviour. Once you understand the pattern — and the history behind it — you will handle every “-or” versus “-our” word with confidence. Pick your variant, keep it consistent, and never hesitate over that little “u” again.
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