#A75710

CSS

:root {
  --brandy-bear: #a75710;
  --brandy-bear-rgb: 167 87 16;
  --brandy-bear-oklch: oklch(0.543 0.129 54.5);
}

.element {
  color: var(--brandy-bear);
  background-color: hsl(28 83% 36%);
  border-color: oklch(0.543 0.129 54.5);
}

Tailwind CSS v4

@theme {
  --color-brandy-bear: #a75710;
  --color-brandy-bear-50: #ffedd2;
  --color-brandy-bear-100: #ffdebf;
  --color-brandy-bear-200: #ffc79f;
  --color-brandy-bear-300: #eaa675;
  --color-brandy-bear-400: #d9884f;
  --color-brandy-bear-500: #c66b1f;
  --color-brandy-bear-600: #a75b1d;
  --color-brandy-bear-700: #864918;
  --color-brandy-bear-800: #643411;
  --color-brandy-bear-900: #46230a;
  --color-brandy-bear-950: #2e1201;
}

SCSS

$brandy-bear: #a75710;
$brandy-bear-rgb: 167, 87, 16;
$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);
}