Lump of Coal

CSS

:root {
  --lump-of-coal: #4e5154;
  --lump-of-coal-rgb: 78 81 84;
  --lump-of-coal-oklch: oklch(0.433 0.006 248);
}

.element {
  color: var(--lump-of-coal);
  background-color: hsl(210 4% 32%);
  border-color: oklch(0.433 0.006 248);
}

Tailwind CSS v4

@theme {
  --color-lump-of-coal: #4e5154;
  --color-lump-of-coal-50: #f4f5f7;
  --color-lump-of-coal-100: #e6e8ea;
  --color-lump-of-coal-200: #d2d4d7;
  --color-lump-of-coal-300: #b5b8ba;
  --color-lump-of-coal-400: #9c9fa2;
  --color-lump-of-coal-500: #83878a;
  --color-lump-of-coal-600: #6f7275;
  --color-lump-of-coal-700: #595b5d;
  --color-lump-of-coal-800: #414344;
  --color-lump-of-coal-900: #2d2e2f;
  --color-lump-of-coal-950: #1a1b1c;
}

SCSS

$lump-of-coal: #4e5154;
$lump-of-coal-rgb: 78, 81, 84;
$lump-of-coal-light: mix(#fff, $lump-of-coal, 20%);
$lump-of-coal-dark: mix(#000, $lump-of-coal, 20%);

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