#B46119

CSS

:root {
  --light-brown: #b46119;
  --light-brown-rgb: 180 97 25;
  --light-brown-oklch: oklch(0.579 0.133 55.2);
}

.element {
  color: var(--light-brown);
  background-color: hsl(28 76% 40%);
  border-color: oklch(0.579 0.133 55.2);
}

Tailwind CSS v4

@theme {
  --color-light-brown: #b46119;
  --color-light-brown-50: #ffecd1;
  --color-light-brown-100: #ffdebd;
  --color-light-brown-200: #ffc69d;
  --color-light-brown-300: #eba672;
  --color-light-brown-400: #da884b;
  --color-light-brown-500: #c76a15;
  --color-light-brown-600: #a85a17;
  --color-light-brown-700: #874812;
  --color-light-brown-800: #65330d;
  --color-light-brown-900: #472308;
  --color-light-brown-950: #2e1100;
}

SCSS

$light-brown: #b46119;
$light-brown-rgb: 180, 97, 25;
$light-brown-light: mix(#fff, $light-brown, 20%);
$light-brown-dark: mix(#000, $light-brown, 20%);

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