noun, noun which may take the genitive case particle 'no', na-adjective
Refers to the color yellow. Can be used as a noun, with の to modify nouns, or as a な-adjective. Often appears in compounds like 黄色 (きいろ).
See also: 黄色
信号が黄になった。
The traffic light turned yellow.
彼女は黄のドレスを着ていた。
She was wearing a yellow dress.
黄色 is the more common, everyday word for the color yellow. 黄 is often used in compounds or as a more formal/technical term.
黄色い is the i-adjective meaning 'yellow'. 黄 can be used as a na-adjective or with の, but 黄色い is more common for describing something as yellow.
The kanji 黄 is a pictograph originally representing a jade ornament or a person wearing a jade ornament, later associated with the color yellow. The reading き is the native Japanese word for yellow.