#996691

CSS

:root {
  --bermuda-onion: #996691;
  --bermuda-onion-rgb: 153 102 145;
  --bermuda-onion-oklch: oklch(0.579 0.088 332.4);
}

.element {
  color: var(--bermuda-onion);
  background-color: hsl(309 20% 50%);
  border-color: oklch(0.579 0.088 332.4);
}

Tailwind CSS v4

@theme {
  --color-bermuda-onion: #996691;
  --color-bermuda-onion-50: #ffecff;
  --color-bermuda-onion-100: #fbddf4;
  --color-bermuda-onion-200: #edc7e4;
  --color-bermuda-onion-300: #d4a7ca;
  --color-bermuda-onion-400: #be8bb6;
  --color-bermuda-onion-500: #a970a0;
  --color-bermuda-onion-600: #8f5f87;
  --color-bermuda-onion-700: #724c6c;
  --color-bermuda-onion-800: #543751;
  --color-bermuda-onion-900: #3a2638;
  --color-bermuda-onion-950: #241423;
}

SCSS

$bermuda-onion: #996691;
$bermuda-onion-rgb: 153, 102, 145;
$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);
}