Names the color itself; generally uncountable but plural possible for varieties
She chose a purplish-red for the accent wall.
Она выбрала пурпурно-красный для акцентной стены.
Used attributively and predicatively to denote a hue between purple and red
The evening sky glowed a brilliant purplish-red.
Вечернее небо сияло ярким пурпурно-красным оттенком.