#AF6321

CSS

:root {
  --light-brown: #af6321;
  --light-brown-rgb: 175 99 33;
  --light-brown-oklch: oklch(0.576 0.124 56.7);
}

.element {
  color: var(--light-brown);
  background-color: hsl(28 68% 41%);
  border-color: oklch(0.576 0.124 56.7);
}

Tailwind CSS v4

@theme {
  --color-light-brown: #af6321;
  --color-light-brown-50: #ffedd3;
  --color-light-brown-100: #ffdfbf;
  --color-light-brown-200: #fdc89f;
  --color-light-brown-300: #e7a876;
  --color-light-brown-400: #d68a50;
  --color-light-brown-500: #c26d22;
  --color-light-brown-600: #a45d1f;
  --color-light-brown-700: #844a19;
  --color-light-brown-800: #633511;
  --color-light-brown-900: #45240b;
  --color-light-brown-950: #2d1301;
}

SCSS

$light-brown: #af6321;
$light-brown-rgb: 175, 99, 33;
$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);
}