#A45913

CSS

:root {
  --brandy-bear: #a45913;
  --brandy-bear-rgb: 164 89 19;
  --brandy-bear-oklch: oklch(0.542 0.124 56.6);
}

.element {
  color: var(--brandy-bear);
  background-color: hsl(29 79% 36%);
  border-color: oklch(0.542 0.124 56.6);
}

Tailwind CSS v4

@theme {
  --color-brandy-bear: #a45913;
  --color-brandy-bear-50: #ffedd3;
  --color-brandy-bear-100: #ffdfc0;
  --color-brandy-bear-200: #fdc8a0;
  --color-brandy-bear-300: #e7a876;
  --color-brandy-bear-400: #d68a51;
  --color-brandy-bear-500: #c26d22;
  --color-brandy-bear-600: #a45d20;
  --color-brandy-bear-700: #844a19;
  --color-brandy-bear-800: #633512;
  --color-brandy-bear-900: #45240b;
  --color-brandy-bear-950: #2d1301;
}

SCSS

$brandy-bear: #a45913;
$brandy-bear-rgb: 164, 89, 19;
$brandy-bear-light: mix(#fff, $brandy-bear, 20%);
$brandy-bear-dark: mix(#000, $brandy-bear, 20%);

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