#8F6E55

CSS

:root {
  --whisky-barrel: #8f6e55;
  --whisky-barrel-rgb: 143 110 85;
  --whisky-barrel-oklch: oklch(0.564 0.056 58.5);
}

.element {
  color: var(--whisky-barrel);
  background-color: hsl(26 25% 45%);
  border-color: oklch(0.564 0.056 58.5);
}

Tailwind CSS v4

@theme {
  --color-whisky-barrel: #8f6e55;
  --color-whisky-barrel-50: #fff2e6;
  --color-whisky-barrel-100: #f6e4d6;
  --color-whisky-barrel-200: #e7cfbd;
  --color-whisky-barrel-300: #cdb19b;
  --color-whisky-barrel-400: #b8977e;
  --color-whisky-barrel-500: #a37d61;
  --color-whisky-barrel-600: #896a53;
  --color-whisky-barrel-700: #6e5542;
  --color-whisky-barrel-800: #523e30;
  --color-whisky-barrel-900: #392a20;
  --color-whisky-barrel-950: #231810;
}

SCSS

$whisky-barrel: #8f6e55;
$whisky-barrel-rgb: 143, 110, 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);
}