Hierarchy classification:

1. top of the aat hierarchies
2. Physical Attributes Facet
3. Color (hierarchy name)
4. [color and color-related phenomena]
5. color (perceived attribute)
6. color-related effects
7. tone (color effect)

Anotations

Scope note:

Use to describe an image, or to denote the effect itself, when the image is composed of a smooth gradation of tones. Often used to designate copy that will need to be photographed with a halftone screen in order to be printed.