#730700

CSS

:root {
  --liquorice-red: #730700;
  --liquorice-red-rgb: 115 7 0;
  --liquorice-red-oklch: oklch(0.353 0.139 30.5);
}

.element {
  color: var(--liquorice-red);
  background-color: hsl(4 100% 23%);
  border-color: oklch(0.353 0.139 30.5);
}

Tailwind CSS v4

@theme {
  --color-liquorice-red: #730700;
  --color-liquorice-red-50: #ffe7dc;
  --color-liquorice-red-100: #ffd8cb;
  --color-liquorice-red-200: #ffbfaf;
  --color-liquorice-red-300: #f69c8a;
  --color-liquorice-red-400: #e57c6b;
  --color-liquorice-red-500: #d25c4a;
  --color-liquorice-red-600: #b24f40;
  --color-liquorice-red-700: #8f3f33;
  --color-liquorice-red-800: #6a2c25;
  --color-liquorice-red-900: #4b1e19;
  --color-liquorice-red-950: #310d0a;
}

SCSS

$liquorice-red: #730700;
$liquorice-red-rgb: 115, 7, 0;
$liquorice-red-light: mix(#fff, $liquorice-red, 20%);
$liquorice-red-dark: mix(#000, $liquorice-red, 20%);

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