#682657

CSS

:root {
  --pretty-in-prune: #682657;
  --pretty-in-prune-rgb: 104 38 87;
  --pretty-in-prune-oklch: oklch(0.384 0.113 338.9);
}

.element {
  color: var(--pretty-in-prune);
  background-color: hsl(315 46% 28%);
  border-color: oklch(0.384 0.113 338.9);
}

Tailwind CSS v4

@theme {
  --color-pretty-in-prune: #682657;
  --color-pretty-in-prune-50: #ffe9ff;
  --color-pretty-in-prune-100: #ffdaf3;
  --color-pretty-in-prune-200: #f7c2e3;
  --color-pretty-in-prune-300: #e0a1c9;
  --color-pretty-in-prune-400: #ca84b5;
  --color-pretty-in-prune-500: #b6669f;
  --color-pretty-in-prune-600: #9a5786;
  --color-pretty-in-prune-700: #7c456c;
  --color-pretty-in-prune-800: #5b3251;
  --color-pretty-in-prune-900: #402238;
  --color-pretty-in-prune-950: #281123;
}

SCSS

$pretty-in-prune: #682657;
$pretty-in-prune-rgb: 104, 38, 87;
$pretty-in-prune-light: mix(#fff, $pretty-in-prune, 20%);
$pretty-in-prune-dark: mix(#000, $pretty-in-prune, 20%);

.element {
  color: $pretty-in-prune;
  box-shadow: 0 0 0 2px rgba($pretty-in-prune, 0.35);
}