Is blue noun or not?
blue (noun) blue–chip (adjective) blue–collar (adjective) blue–ribbon (adjective)
color (noun) color (verb) color–blind (adjective)
purple (noun) purple (adjective) Purple Heart (noun)
blue adjective, noun [C/U] (COLOR)
She has blue eyes.
The word color (or colour) is a noun and a noun adjunct (a noun that acts like an adjective to modify another noun) as well as a verb and—in its participle forms—a participle adjective . . . I colored (verb) the black-and-white coloring (present participle adjective) page with a blue color (noun).
In the English language the word the is classified as an article, which is a word used to define a noun. (More on that a little later.) But an article isn't one of the eight parts of speech. Articles are considered a type of adjective, so "the" is technically an adjective as well.
red (noun) Red (proper noun) red–blooded (adjective)
pink (noun) pink (adjective) pink (verb) pink–collar (adjective)
green adjective, noun [C/U] (COLOR)
yellow (noun) yellow (verb) yellow–bellied (adjective)
Is orange colour a noun?
The word orange is a noun and an adjective in the English language. In both cases, it refers primarily to the orange fruit and the color orange, but has many other derivative meanings.
orange (noun) Orange (proper noun)
cobalt bluenavy blueultramarinecolorprussian blueturquoiseazureyellowcolourindigolapis lazuliceruleanjeanssky blueredbluishdarkbluenessgreensapphirechromaticskypurpledyewoadazuritedownblueishblackrayleigh scattering.
Verb We colored the water with red ink. The children were busy coloring in their coloring books. My nephew colored a picture for me. The child colored the sky blue and the sun yellow.
Answer and Explanation: The word blue is an adjective because it is used to describe a noun. All colors can be adjectives because a color is a describing word.
Noun. A pale blue colour: sky blue or similar.
black adjective, noun [U] (COLOR)
(of) the darkest color there is, like night: He was dressed all in black. Black coffee or tea has no milk or cream in it.
Black is most commonly used as an adjective, but you can also use it as a noun, like when you say, "The actors wore black." Synonyms when used to describe color include inky, raven, and sable. This word can also refer to an angry feeling, as in a black mood, or something wicked, like black magic.
The word blue is an adjective because it is used to describe a noun. All colors can be adjectives because a color is a describing word.
BLUE JEANS (noun) definition and synonyms | Macmillan Dictionary.