#AF6416

CSS

:root {
  --light-brown: #af6416;
  --light-brown-rgb: 175 100 22;
  --light-brown-oklch: oklch(0.577 0.128 59.7);
}

.element {
  color: var(--light-brown);
  background-color: hsl(31 78% 39%);
  border-color: oklch(0.577 0.128 59.7);
}

Tailwind CSS v4

@theme {
  --color-light-brown: #af6416;
  --color-light-brown-50: #ffeed1;
  --color-light-brown-100: #ffdfbd;
  --color-light-brown-200: #fdc89c;
  --color-light-brown-300: #e7a872;
  --color-light-brown-400: #d58b4a;
  --color-light-brown-500: #c26e12;
  --color-light-brown-600: #a45e15;
  --color-light-brown-700: #844b11;
  --color-light-brown-800: #62350c;
  --color-light-brown-900: #452407;
  --color-light-brown-950: #2d1300;
}

SCSS

$light-brown: #af6416;
$light-brown-rgb: 175, 100, 22;
$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);
}