#9B6399

CSS

:root {
  --bermuda-onion: #9b6399;
  --bermuda-onion-rgb: 155 99 153;
  --bermuda-onion-oklch: oklch(0.579 0.104 328);
}

.element {
  color: var(--bermuda-onion);
  background-color: hsl(302 22% 50%);
  border-color: oklch(0.579 0.104 328);
}

Tailwind CSS v4

@theme {
  --color-bermuda-onion: #9b6399;
  --color-bermuda-onion-50: #ffebff;
  --color-bermuda-onion-100: #fddcf9;
  --color-bermuda-onion-200: #eec5ea;
  --color-bermuda-onion-300: #d6a5d1;
  --color-bermuda-onion-400: #c088bd;
  --color-bermuda-onion-500: #ab6ca9;
  --color-bermuda-onion-600: #905c8f;
  --color-bermuda-onion-700: #744972;
  --color-bermuda-onion-800: #553555;
  --color-bermuda-onion-900: #3b243c;
  --color-bermuda-onion-950: #251325;
}

SCSS

$bermuda-onion: #9b6399;
$bermuda-onion-rgb: 155, 99, 153;
$bermuda-onion-light: mix(#fff, $bermuda-onion, 20%);
$bermuda-onion-dark: mix(#000, $bermuda-onion, 20%);

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