#976E50

CSS

:root {
  --whisky-barrel: #976e50;
  --whisky-barrel-rgb: 151 110 80;
  --whisky-barrel-oklch: oklch(0.572 0.068 57.1);
}

.element {
  color: var(--whisky-barrel);
  background-color: hsl(25 31% 45%);
  border-color: oklch(0.572 0.068 57.1);
}

Tailwind CSS v4

@theme {
  --color-whisky-barrel: #976e50;
  --color-whisky-barrel-50: #fff1e2;
  --color-whisky-barrel-100: #fae3d2;
  --color-whisky-barrel-200: #ebceb8;
  --color-whisky-barrel-300: #d2b095;
  --color-whisky-barrel-400: #be9577;
  --color-whisky-barrel-500: #a97b59;
  --color-whisky-barrel-600: #8f684c;
  --color-whisky-barrel-700: #72533c;
  --color-whisky-barrel-800: #553c2b;
  --color-whisky-barrel-900: #3b291d;
  --color-whisky-barrel-950: #25170d;
}

SCSS

$whisky-barrel: #976e50;
$whisky-barrel-rgb: 151, 110, 80;
$whisky-barrel-light: mix(#fff, $whisky-barrel, 20%);
$whisky-barrel-dark: mix(#000, $whisky-barrel, 20%);

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