Hierarchy classification:

1. top of the aat hierarchies
2. Physical Attributes Facet
3. Color (hierarchy name)
4. colors (hues or tints)
5. color types
6. primary colors

Additional parents:

1. top of the aat hierarchies
2. Associated Concepts Facet
3. Associated Concepts
4. scientific concepts
5. biological concepts
6. senses
7. sight

Anotations

Scope note:

Refers to four basic colors, red, green, blue, and yellow, that -- together with black and white -- describe color sensations and in theory produce differing psychological effects in humans. The brain's processing of visual information on the retina is based on three sets of colors and achromatic signals: red and green, blue and yellow (absence of blue), and white and black.