#915F5A

CSS

:root {
  --root-beer: #915f5a;
  --root-beer-rgb: 145 95 90;
  --root-beer-oklch: oklch(0.538 0.066 25.8);
}

.element {
  color: var(--root-beer);
  background-color: hsl(5 23% 46%);
  border-color: oklch(0.538 0.066 25.8);
}

Tailwind CSS v4

@theme {
  --color-root-beer: #915f5a;
  --color-root-beer-50: #ffefeb;
  --color-root-beer-100: #fee0dc;
  --color-root-beer-200: #f0cac5;
  --color-root-beer-300: #d8aba5;
  --color-root-beer-400: #c3908a;
  --color-root-beer-500: #ae756f;
  --color-root-beer-600: #93635e;
  --color-root-beer-700: #764f4b;
  --color-root-beer-800: #573937;
  --color-root-beer-900: #3d2726;
  --color-root-beer-950: #261514;
}

SCSS

$root-beer: #915f5a;
$root-beer-rgb: 145, 95, 90;
$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);
}