Plum (#8E4585) is a medium, muted magenta hue. Plum is a dark reddish purple that feels rich and sophisticated.
In RGB it is made of 142 red, 69 green and 133 blue. Its HSL hue angle is 307° with 35% saturation and 41% lightness, while its perceptual OKLCH lightness is 51% with a chroma of 0.129. For print, a starting CMYK mix is 0% cyan, 51% magenta, 6% yellow and 44% black.
As a text color on white, Plum has a contrast ratio of 6.29:1, which passes WCAG AA for normal text. On black it reaches 3.34:1 and passes AA only for large text. If you use Plum as a background, put white text on it. The APCA lightness contrast is Lc 23 for black text and Lc -86 for white text.
Its perceptual complement is #0B793E, close to green. Colors that look most similar are purple, eggplant, amethyst. It looks fairly similar to people with red-green color blindness (ΔE 12), so its meaning mostly survives.