achromatic has definitions from the field of color
1
[ adjective ] (color) being of the achromatic color of maximum darkness; having little or no hue owing to absorption of almost all incident light

Synonyms

black

Examples

"black leather jackets" "as black as coal" "rich black soil"

Related terms

white dark value

2
[ adjective ] (color) being of the achromatic color of maximum lightness; having little or no hue owing to reflection of almost all incident light

Synonyms

white

Examples

"as white as fresh snow" "a bride's white dress"

Related terms

black albescent light value

3
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