#966699

CSS

:root {
  --bermuda-onion: #966699;
  --bermuda-onion-rgb: 150 102 153;
  --bermuda-onion-oklch: oklch(0.579 0.094 324.7);
}

.element {
  color: var(--bermuda-onion);
  background-color: hsl(296 20% 50%);
  border-color: oklch(0.579 0.094 324.7);
}

Tailwind CSS v4

@theme {
  --color-bermuda-onion: #966699;
  --color-bermuda-onion-50: #ffecff;
  --color-bermuda-onion-100: #f9ddf9;
  --color-bermuda-onion-200: #ebc7ea;
  --color-bermuda-onion-300: #d2a7d1;
  --color-bermuda-onion-400: #bb8bbe;
  --color-bermuda-onion-500: #a570a9;
  --color-bermuda-onion-600: #8c5f8f;
  --color-bermuda-onion-700: #704c72;
  --color-bermuda-onion-800: #523755;
  --color-bermuda-onion-900: #39263c;
  --color-bermuda-onion-950: #231425;
}

SCSS

$bermuda-onion: #966699;
$bermuda-onion-rgb: 150, 102, 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);
}