Largest Black Slug

CSS

:root {
  --largest-black-slug: #551f2f;
  --largest-black-slug-rgb: 85 31 47;
  --largest-black-slug-oklch: oklch(0.325 0.082 4.3);
}

.element {
  color: var(--largest-black-slug);
  background-color: hsl(342 47% 23%);
  border-color: oklch(0.325 0.082 4.3);
}

Tailwind CSS v4

@theme {
  --color-largest-black-slug: #551f2f;
  --color-largest-black-slug-50: #ffecf1;
  --color-largest-black-slug-100: #ffdde3;
  --color-largest-black-slug-200: #f4c6cf;
  --color-largest-black-slug-300: #dda6b1;
  --color-largest-black-slug-400: #c88a98;
  --color-largest-black-slug-500: #b46f7f;
  --color-largest-black-slug-600: #985e6c;
  --color-largest-black-slug-700: #7a4b56;
  --color-largest-black-slug-800: #5a3640;
  --color-largest-black-slug-900: #3f252c;
  --color-largest-black-slug-950: #281319;
}

SCSS

$largest-black-slug: #551f2f;
$largest-black-slug-rgb: 85, 31, 47;
$largest-black-slug-light: mix(#fff, $largest-black-slug, 20%);
$largest-black-slug-dark: mix(#000, $largest-black-slug, 20%);

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