Plum

CSS

:root {
  --plum: #66386a;
  --plum-rgb: 102 56 106;
  --plum-oklch: oklch(0.418 0.097 324.2);
}

.element {
  color: var(--plum);
  background-color: hsl(295 31% 32%);
  border-color: oklch(0.418 0.097 324.2);
}

Tailwind CSS v4

@theme {
  --color-plum: #66386a;
  --color-plum-50: #ffecff;
  --color-plum-100: #faddfa;
  --color-plum-200: #ebc6eb;
  --color-plum-300: #d2a6d2;
  --color-plum-400: #bb8bbf;
  --color-plum-500: #a66faa;
  --color-plum-600: #8c5e90;
  --color-plum-700: #704b73;
  --color-plum-800: #523756;
  --color-plum-900: #39253c;
  --color-plum-950: #241426;
}

SCSS

$plum: #66386a;
$plum-rgb: 102, 56, 106;
$plum-light: mix(#fff, $plum, 20%);
$plum-dark: mix(#000, $plum, 20%);

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