#80574F

CSS

:root {
  --root-beer: #80574f;
  --root-beer-rgb: 128 87 79;
  --root-beer-oklch: oklch(0.499 0.056 31.4);
}

.element {
  color: var(--root-beer);
  background-color: hsl(10 24% 41%);
  border-color: oklch(0.499 0.056 31.4);
}

Tailwind CSS v4

@theme {
  --color-root-beer: #80574f;
  --color-root-beer-50: #fff0eb;
  --color-root-beer-100: #fae2dc;
  --color-root-beer-200: #ebccc5;
  --color-root-beer-300: #d3aea5;
  --color-root-beer-400: #be938a;
  --color-root-beer-500: #a8796f;
  --color-root-beer-600: #8e665e;
  --color-root-beer-700: #72524b;
  --color-root-beer-800: #543b37;
  --color-root-beer-900: #3b2926;
  --color-root-beer-950: #251614;
}

SCSS

$root-beer: #80574f;
$root-beer-rgb: 128, 87, 79;
$root-beer-light: mix(#fff, $root-beer, 20%);
$root-beer-dark: mix(#000, $root-beer, 20%);

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