#A45A9C

CSS

:root {
  --bermuda-onion: #a45a9c;
  --bermuda-onion-rgb: 164 90 156;
  --bermuda-onion-oklch: oklch(0.577 0.129 331.2);
}

.element {
  color: var(--bermuda-onion);
  background-color: hsl(306 29% 50%);
  border-color: oklch(0.577 0.129 331.2);
}

Tailwind CSS v4

@theme {
  --color-bermuda-onion: #a45a9c;
  --color-bermuda-onion-50: #ffe8ff;
  --color-bermuda-onion-100: #ffd9fb;
  --color-bermuda-onion-200: #f7c0ec;
  --color-bermuda-onion-300: #e09fd4;
  --color-bermuda-onion-400: #ca81c1;
  --color-bermuda-onion-500: #b663ad;
  --color-bermuda-onion-600: #9a5492;
  --color-bermuda-onion-700: #7b4375;
  --color-bermuda-onion-800: #5a3058;
  --color-bermuda-onion-900: #3f213e;
  --color-bermuda-onion-950: #281027;
}

SCSS

$bermuda-onion: #a45a9c;
$bermuda-onion-rgb: 164, 90, 156;
$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);
}