#8B6441

CSS

:root {
  --wild-horses: #8b6441;
  --wild-horses-rgb: 139 100 65;
  --wild-horses-oklch: oklch(0.535 0.071 62.3);
}

.element {
  color: var(--wild-horses);
  background-color: hsl(28 36% 40%);
  border-color: oklch(0.535 0.071 62.3);
}

Tailwind CSS v4

@theme {
  --color-wild-horses: #8b6441;
  --color-wild-horses-50: #fff1e1;
  --color-wild-horses-100: #f9e4d0;
  --color-wild-horses-200: #eacfb5;
  --color-wild-horses-300: #d2b092;
  --color-wild-horses-400: #bd9673;
  --color-wild-horses-500: #a87c54;
  --color-wild-horses-600: #8e6948;
  --color-wild-horses-700: #725439;
  --color-wild-horses-800: #553d29;
  --color-wild-horses-900: #3b2a1b;
  --color-wild-horses-950: #25170c;
}

SCSS

$wild-horses: #8b6441;
$wild-horses-rgb: 139, 100, 65;
$wild-horses-light: mix(#fff, $wild-horses, 20%);
$wild-horses-dark: mix(#000, $wild-horses, 20%);

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