Blacklist

CSS

:root {
  --blacklist: #221133;
  --blacklist-rgb: 34 17 51;
  --blacklist-oklch: oklch(0.221 0.066 304.7);
}

.element {
  color: var(--blacklist);
  background-color: hsl(270 50% 13%);
  border-color: oklch(0.221 0.066 304.7);
}

Tailwind CSS v4

@theme {
  --color-blacklist: #221133;
  --color-blacklist-50: #faf1ff;
  --color-blacklist-100: #ede3fa;
  --color-blacklist-200: #dbcdeb;
  --color-blacklist-300: #c0afd2;
  --color-blacklist-400: #a795be;
  --color-blacklist-500: #907baa;
  --color-blacklist-600: #7a698f;
  --color-blacklist-700: #615373;
  --color-blacklist-800: #473d55;
  --color-blacklist-900: #312a3c;
  --color-blacklist-950: #1d1725;
}

SCSS

$blacklist: #221133;
$blacklist-rgb: 34, 17, 51;
$blacklist-light: mix(#fff, $blacklist, 20%);
$blacklist-dark: mix(#000, $blacklist, 20%);

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