#B66E31

CSS

:root {
  --brown-alpaca: #b66e31;
  --brown-alpaca-rgb: 182 110 49;
  --brown-alpaca-oklch: oklch(0.606 0.118 57.8);
}

.element {
  color: var(--brown-alpaca);
  background-color: hsl(28 58% 45%);
  border-color: oklch(0.606 0.118 57.8);
}

Tailwind CSS v4

@theme {
  --color-brown-alpaca: #b66e31;
  --color-brown-alpaca-50: #ffeed4;
  --color-brown-alpaca-100: #ffdfc1;
  --color-brown-alpaca-200: #fbc9a2;
  --color-brown-alpaca-300: #e5a979;
  --color-brown-alpaca-400: #d38c54;
  --color-brown-alpaca-500: #bf6f28;
  --color-brown-alpaca-600: #a25f24;
  --color-brown-alpaca-700: #824c1d;
  --color-brown-alpaca-800: #613614;
  --color-brown-alpaca-900: #44250d;
  --color-brown-alpaca-950: #2c1302;
}

SCSS

$brown-alpaca: #b66e31;
$brown-alpaca-rgb: 182, 110, 49;
$brown-alpaca-light: mix(#fff, $brown-alpaca, 20%);
$brown-alpaca-dark: mix(#000, $brown-alpaca, 20%);

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