#B26216

CSS

:root {
  --light-brown: #b26216;
  --light-brown-rgb: 178 98 22;
  --light-brown-oklch: oklch(0.577 0.131 57.1);
}

.element {
  color: var(--light-brown);
  background-color: hsl(29 78% 39%);
  border-color: oklch(0.577 0.131 57.1);
}

Tailwind CSS v4

@theme {
  --color-light-brown: #b26216;
  --color-light-brown-50: #ffedd0;
  --color-light-brown-100: #ffdebd;
  --color-light-brown-200: #ffc79c;
  --color-light-brown-300: #eaa771;
  --color-light-brown-400: #d8894a;
  --color-light-brown-500: #c56c12;
  --color-light-brown-600: #a75b14;
  --color-light-brown-700: #864911;
  --color-light-brown-800: #64340c;
  --color-light-brown-900: #462407;
  --color-light-brown-950: #2e1200;
}

SCSS

$light-brown: #b26216;
$light-brown-rgb: 178, 98, 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);
}