UK:*UK and possibly other pronunciationsUK and possibly other pronunciations/ˈkʌlər/US:USA pronunciation: IPA and respellingUSA pronuncation: IPA/ˈkʌlɚ/ ,USA pronunciation: respelling(kulər)

WordReference Collins English Usage © 2020
When you are describing the colour of something, you don't normally use the word colour. Don't say, for example, ‘He wore a green colour tie’. You say ‘He wore a green tie’.
She had blonde hair and green eyes.
She was wearing a bright yellow hat.
However, you sometimes use the word colour when you are asking about the colour of something, or when you are describing a colour in an indirect way.
What colour was the bird?
The paint was the colour of grass.
Be careful
In sentences like these you use be, not ‘have’. Don't say ‘What colour has the bird?’ or ‘The paint has the colour of grass’.
You also use the word colour when you are using more unusual colour words. For example, you can say that something is a bluish-green colour.
The plastic is treated with heat until it turns a milky white colour.
There was the sea, a glittering blue-green colour.
You can also say, for example, that something is bluish-green in colour.
The leaves are rough and grey-green in colour.
You can also add the suffix -coloured to the name of a colour.
He bought me a cheap gold-coloured bracelet.
He selected one of his most expensive cream-coloured suits.
The American spellings of ‘colour’ and ‘-coloured’ are color and -colored.
'colour' also found in these entries:

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