Meaning a very obvious difference between 2 things.
It depends on how you use it. If you mean literal colors, then it's not an idiom. If you say something like "It's all there in black and white," then it's an idiom meaning that something is printed.
She sees every situation in black and white although she knows it is wrong.
siah o sufaid
The idiom "in black and white" originates from the literal contrast between black ink and white paper, often used in printed texts. It typically refers to something that is clear, straightforward, or unambiguous, often implying that the information is documented or officially stated. The phrase can also suggest a lack of nuance, indicating that a situation or decision is seen in absolutes rather than shades of gray.
It means very white or pale.
An idiom that means surrender is to "wave the white flag." A closely related idiom is to "throw in the towel" which means to give up."
black sheep
This is not an idiom. It is comparing one thing to another, so it is a simile. Remember: "AS ___ AS___" means A Simile! It is just saying that something is very black.
There aren't any idioms that mean "black" that I know of. There are plenty of similes, like "black as the ace of spades."
It means that something is printed in black ink on white paper - it can also mean that something is plain to see or plainly stated in writing.In the first place, it means in writing ( black ink, white paper). Secondly it means in clearly defined contrast of mutually exclusive alternatives.To put it in writing. ( All the orders should be put in black and while)It is plain for every one to see, it is obvious
It means to be very angry.
"A black day" is an idiom in contemporary English that is relatively uncommon but still quite useful. With "black" referring primarily to darkness (of night, of a storm, etc.) when there ought to be light, its basic meaning is simply this: "a bad or difficult day."