A harmony of colours or sounds.

Painting. Harmony of colour or design; an instance of this. Obsolete.

Arrangement of elements (of a picture, building, etc.) having a restful effect on the eye; simplicity, balance, harmony.

Art. Due or proper effect or emphasis; relative tone of colour in each distinct section of a picture; a particular tone or emphasis. Also in…

In Painting. originally. The maintenance of the proper relation between the representations of nearer and more distant objects in a picture; hence…

A pleasing visual effect or combination of colours, suggestive in some way of music. Now rare.

a harmonious relationship between two or more colours, esp. as created by an artist (cf. colour chord n.); (also occasionally) a similar…

transferred. A harmonious combination of colours.