#790000

CSS

:root {
  --liquorice-red: #790000;
  --liquorice-red-rgb: 121 0 0;
  --liquorice-red-oklch: oklch(0.362 0.148 29.2);
}

.element {
  color: var(--liquorice-red);
  background-color: hsl(0 100% 24%);
  border-color: oklch(0.362 0.148 29.2);
}

Tailwind CSS v4

@theme {
  --color-liquorice-red: #790000;
  --color-liquorice-red-50: #ffe6db;
  --color-liquorice-red-100: #ffd6ca;
  --color-liquorice-red-200: #ffbdad;
  --color-liquorice-red-300: #fa9a88;
  --color-liquorice-red-400: #e9796a;
  --color-liquorice-red-500: #d75748;
  --color-liquorice-red-600: #b54b3e;
  --color-liquorice-red-700: #923c31;
  --color-liquorice-red-800: #6d2a25;
  --color-liquorice-red-900: #4d1c18;
  --color-liquorice-red-950: #320c09;
}

SCSS

$liquorice-red: #790000;
$liquorice-red-rgb: 121, 0, 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);
}