#AF601D

CSS

:root {
  --light-brown: #af601d;
  --light-brown-rgb: 175 96 29;
  --light-brown-oklch: oklch(0.57 0.127 55.4);
}

.element {
  color: var(--light-brown);
  background-color: hsl(28 72% 40%);
  border-color: oklch(0.57 0.127 55.4);
}

Tailwind CSS v4

@theme {
  --color-light-brown: #af601d;
  --color-light-brown-50: #ffedd2;
  --color-light-brown-100: #ffdebf;
  --color-light-brown-200: #ffc79f;
  --color-light-brown-300: #e9a775;
  --color-light-brown-400: #d8894f;
  --color-light-brown-500: #c46c1f;
  --color-light-brown-600: #a65c1e;
  --color-light-brown-700: #854918;
  --color-light-brown-800: #643411;
  --color-light-brown-900: #46240a;
  --color-light-brown-950: #2d1201;
}

SCSS

$light-brown: #af601d;
$light-brown-rgb: 175, 96, 29;
$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);
}