#8D5D82

CSS

:root {
  --plum-highness: #8d5d82;
  --plum-highness-rgb: 141 93 130;
  --plum-highness-oklch: oklch(0.543 0.081 335.3);
}

.element {
  color: var(--plum-highness);
  background-color: hsl(314 21% 46%);
  border-color: oklch(0.543 0.081 335.3);
}

Tailwind CSS v4

@theme {
  --color-plum-highness: #8d5d82;
  --color-plum-highness-50: #ffedfe;
  --color-plum-highness-100: #fbdef2;
  --color-plum-highness-200: #ecc8e1;
  --color-plum-highness-300: #d3a8c6;
  --color-plum-highness-400: #bd8cb1;
  --color-plum-highness-500: #a8719b;
  --color-plum-highness-600: #8e6083;
  --color-plum-highness-700: #724d69;
  --color-plum-highness-800: #53384e;
  --color-plum-highness-900: #3a2636;
  --color-plum-highness-950: #241421;
}

SCSS

$plum-highness: #8d5d82;
$plum-highness-rgb: 141, 93, 130;
$plum-highness-light: mix(#fff, $plum-highness, 20%);
$plum-highness-dark: mix(#000, $plum-highness, 20%);

.element {
  color: $plum-highness;
  box-shadow: 0 0 0 2px rgba($plum-highness, 0.35);
}