#6E1D63

CSS

:root {
  --pretty-in-prune: #6e1d63;
  --pretty-in-prune-rgb: 110 29 99;
  --pretty-in-prune-oklch: oklch(0.389 0.141 334);
}

.element {
  color: var(--pretty-in-prune);
  background-color: hsl(308 58% 27%);
  border-color: oklch(0.389 0.141 334);
}

Tailwind CSS v4

@theme {
  --color-pretty-in-prune: #6e1d63;
  --color-pretty-in-prune-50: #ffe7ff;
  --color-pretty-in-prune-100: #ffd7fa;
  --color-pretty-in-prune-200: #fbbeeb;
  --color-pretty-in-prune-300: #e59bd3;
  --color-pretty-in-prune-400: #d07dc1;
  --color-pretty-in-prune-500: #bc5eac;
  --color-pretty-in-prune-600: #9f5091;
  --color-pretty-in-prune-700: #7f4075;
  --color-pretty-in-prune-800: #5e2e58;
  --color-pretty-in-prune-900: #421f3d;
  --color-pretty-in-prune-950: #2a0e27;
}

SCSS

$pretty-in-prune: #6e1d63;
$pretty-in-prune-rgb: 110, 29, 99;
$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);
}