#B383F6

CSS

:root {
  --illicit-purple: #b383f6;
  --illicit-purple-rgb: 179 131 246;
  --illicit-purple-oklch: oklch(0.704 0.168 301.5);
}

.element {
  color: var(--illicit-purple);
  background-color: hsl(265 86% 74%);
  border-color: oklch(0.704 0.168 301.5);
}

Tailwind CSS v4

@theme {
  --color-illicit-purple: #b383f6;
  --color-illicit-purple-50: #ffeaff;
  --color-illicit-purple-100: #f3dbff;
  --color-illicit-purple-200: #e3c3ff;
  --color-illicit-purple-300: #c9a1fd;
  --color-illicit-purple-400: #b184f0;
  --color-illicit-purple-500: #9b64e1;
  --color-illicit-purple-600: #8356be;
  --color-illicit-purple-700: #694499;
  --color-illicit-purple-800: #4c3273;
  --color-illicit-purple-900: #342251;
  --color-illicit-purple-950: #201036;
}

SCSS

$illicit-purple: #b383f6;
$illicit-purple-rgb: 179, 131, 246;
$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);
}