Hierarchy classification:

1. top of the aat hierarchies
2. Physical Attributes Facet
3. Attributes and Properties (hierarchy name)
4. [attributes and properties by specific type]
5. optical properties

Anotations

Scope note:

The percentage of light reflected by a given surface. The highest brightness value, 100%, is a brilliant white and 0% is black. When referring to the degree of lightness or darkness of a color, use "value (color)."