#A5581C

CSS

:root {
  --brandy-bear: #a5581c;
  --brandy-bear-rgb: 165 88 28;
  --brandy-bear-oklch: oklch(0.542 0.123 53.5);
}

.element {
  color: var(--brandy-bear);
  background-color: hsl(26 71% 38%);
  border-color: oklch(0.542 0.123 53.5);
}

Tailwind CSS v4

@theme {
  --color-brandy-bear: #a5581c;
  --color-brandy-bear-50: #ffedd4;
  --color-brandy-bear-100: #ffdec1;
  --color-brandy-bear-200: #fec7a2;
  --color-brandy-bear-300: #e8a779;
  --color-brandy-bear-400: #d78955;
  --color-brandy-bear-500: #c46c2a;
  --color-brandy-bear-600: #a55c26;
  --color-brandy-bear-700: #85491e;
  --color-brandy-bear-800: #633415;
  --color-brandy-bear-900: #46240d;
  --color-brandy-bear-950: #2d1202;
}

SCSS

$brandy-bear: #a5581c;
$brandy-bear-rgb: 165, 88, 28;
$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);
}