- 黑色素 hēisèsù melanina dark biological pigment occurring in the skin, hair, and eyes of humans and animals
- 黑色金属 hēisèjīnshǔ ferrous metalsferrous metals (i.e. iron, chromium, manganese and alloys containing them)
- 乌黑色 wūhēisè jet-blacka deep, dark black color; crow-black
- 黑色星期五 Hēisè Xīngqīwǔ Black Friday