#B75F12

CSS

:root {
  --light-brown: #b75f12;
  --light-brown-rgb: 183 95 18;
  --light-brown-oklch: oklch(0.579 0.139 54);
}

.element {
  color: var(--light-brown);
  background-color: hsl(28 82% 39%);
  border-color: oklch(0.579 0.139 54);
}

Tailwind CSS v4

@theme {
  --color-light-brown: #b75f12;
  --color-light-brown-50: #ffecd0;
  --color-light-brown-100: #ffddbc;
  --color-light-brown-200: #ffc59b;
  --color-light-brown-300: #eea470;
  --color-light-brown-400: #dd8648;
  --color-light-brown-500: #ca670a;
  --color-light-brown-600: #ab5810;
  --color-light-brown-700: #89460e;
  --color-light-brown-800: #67320a;
  --color-light-brown-900: #482206;
  --color-light-brown-950: #2f1100;
}

SCSS

$light-brown: #b75f12;
$light-brown-rgb: 183, 95, 18;
$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);
}