#8A6542

CSS

:root {
  --wild-horses: #8a6542;
  --wild-horses-rgb: 138 101 66;
  --wild-horses-oklch: oklch(0.536 0.069 63.9);
}

.element {
  color: var(--wild-horses);
  background-color: hsl(29 35% 40%);
  border-color: oklch(0.536 0.069 63.9);
}

Tailwind CSS v4

@theme {
  --color-wild-horses: #8a6542;
  --color-wild-horses-50: #fff2e1;
  --color-wild-horses-100: #f8e4d0;
  --color-wild-horses-200: #e9cfb6;
  --color-wild-horses-300: #d0b193;
  --color-wild-horses-400: #bc9674;
  --color-wild-horses-500: #a77c55;
  --color-wild-horses-600: #8d6948;
  --color-wild-horses-700: #715439;
  --color-wild-horses-800: #543d29;
  --color-wild-horses-900: #3a2a1c;
  --color-wild-horses-950: #24170c;
}

SCSS

$wild-horses: #8a6542;
$wild-horses-rgb: 138, 101, 66;
$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);
}