#B186ED

CSS

:root {
  --illicit-purple: #b186ed;
  --illicit-purple-rgb: 177 134 237;
  --illicit-purple-oklch: oklch(0.703 0.152 301.9);
}

.element {
  color: var(--illicit-purple);
  background-color: hsl(265 74% 73%);
  border-color: oklch(0.703 0.152 301.9);
}

Tailwind CSS v4

@theme {
  --color-illicit-purple: #b186ed;
  --color-illicit-purple-50: #feebff;
  --color-illicit-purple-100: #f3dcff;
  --color-illicit-purple-200: #e2c5ff;
  --color-illicit-purple-300: #c8a4f7;
  --color-illicit-purple-400: #af87e8;
  --color-illicit-purple-500: #9a69d8;
  --color-illicit-purple-600: #8259b7;
  --color-illicit-purple-700: #684793;
  --color-illicit-purple-800: #4b346e;
  --color-illicit-purple-900: #34234e;
  --color-illicit-purple-950: #201234;
}

SCSS

$illicit-purple: #b186ed;
$illicit-purple-rgb: 177, 134, 237;
$illicit-purple-light: mix(#fff, $illicit-purple, 20%);
$illicit-purple-dark: mix(#000, $illicit-purple, 20%);

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