Characterized by or relating to color or hue, brightly colored or vivid, and having the capacity to separate spectral colors by refraction.

An adjective "chromatic" refers to a type of tetrachord in ancient greece and also relates to the use of notes outside the diatonic scale in music.

(biology) Relating to chromatin (“a complex of DNA, RNA, and proteins within the cell nucleus out of which chromosomes condense during cell division”).