#8F5B83

CSS

:root {
  --plum-highness: #8f5b83;
  --plum-highness-rgb: 143 91 131;
  --plum-highness-oklch: oklch(0.542 0.088 335.6);
}

.element {
  color: var(--plum-highness);
  background-color: hsl(314 22% 46%);
  border-color: oklch(0.542 0.088 335.6);
}

Tailwind CSS v4

@theme {
  --color-plum-highness: #8f5b83;
  --color-plum-highness-50: #ffecfe;
  --color-plum-highness-100: #fcddf2;
  --color-plum-highness-200: #eec6e2;
  --color-plum-highness-300: #d6a7c7;
  --color-plum-highness-400: #c08bb3;
  --color-plum-highness-500: #aa6f9d;
  --color-plum-highness-600: #905e84;
  --color-plum-highness-700: #744b6a;
  --color-plum-highness-800: #55374f;
  --color-plum-highness-900: #3b2537;
  --color-plum-highness-950: #251422;
}

SCSS

$plum-highness: #8f5b83;
$plum-highness-rgb: 143, 91, 131;
$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);
}