#8F7155

CSS

:root {
  --whisky-barrel: #8f7155;
  --whisky-barrel-rgb: 143 113 85;
  --whisky-barrel-oklch: oklch(0.571 0.055 64.4);
}

.element {
  color: var(--whisky-barrel);
  background-color: hsl(29 25% 45%);
  border-color: oklch(0.571 0.055 64.4);
}

Tailwind CSS v4

@theme {
  --color-whisky-barrel: #8f7155;
  --color-whisky-barrel-50: #fff2e5;
  --color-whisky-barrel-100: #f5e5d5;
  --color-whisky-barrel-200: #e5d0bc;
  --color-whisky-barrel-300: #cbb29a;
  --color-whisky-barrel-400: #b6987c;
  --color-whisky-barrel-500: #a07f5f;
  --color-whisky-barrel-600: #886b51;
  --color-whisky-barrel-700: #6d5641;
  --color-whisky-barrel-800: #503e2e;
  --color-whisky-barrel-900: #382b1f;
  --color-whisky-barrel-950: #23180f;
}

SCSS

$whisky-barrel: #8f7155;
$whisky-barrel-rgb: 143, 113, 85;
$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);
}