"It is white and black" in Engpsh is "it is black and white".
The phrase "black and white" as an adjective to describe something as either completely black or white, or as having only two colors (black and white) with no other colors in between, originated from the pmited color palette used in early printing and photography.
Example sentences:
The photo was printed in black and white.
(照片是黑白印刷的。)
The movie was shot in black and white to give it a classic feel.
(电影是以黑白拍摄的，以给它带来经典的感觉。)
The argument between the two friends was a classic case of black and white thinking.
(两个朋友之间的争论是一个典型的黑白思维。)