#A65714

CSS

:root {
  --brandy-bear: #a65714;
  --brandy-bear-rgb: 166 87 20;
  --brandy-bear-oklch: oklch(0.541 0.127 54.2);
}

.element {
  color: var(--brandy-bear);
  background-color: hsl(28 78% 36%);
  border-color: oklch(0.541 0.127 54.2);
}

Tailwind CSS v4

@theme {
  --color-brandy-bear: #a65714;
  --color-brandy-bear-50: #ffedd3;
  --color-brandy-bear-100: #ffdec0;
  --color-brandy-bear-200: #ffc7a0;
  --color-brandy-bear-300: #e9a676;
  --color-brandy-bear-400: #d88951;
  --color-brandy-bear-500: #c56b23;
  --color-brandy-bear-600: #a65b20;
  --color-brandy-bear-700: #86491a;
  --color-brandy-bear-800: #643412;
  --color-brandy-bear-900: #46230b;
  --color-brandy-bear-950: #2d1201;
}

SCSS

$brandy-bear: #a65714;
$brandy-bear-rgb: 166, 87, 20;
$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);
}