also: はくいっしょく
noun, noun-modifying (irregular)
bright white; brilliant white
Describes a scene or object that is completely white, often used for snow-covered landscapes, ice, or a uniform white appearance. Can be used as a noun or prenominally.
山は白一色の雪景色だった。
The mountain was a completely white snowscape.
会場は白一色の装飾でまとめられて
The venue was decorated entirely in white.