#B15F08

CSS

:root {
  --light-brown: #b15f08;
  --light-brown-rgb: 177 95 8;
  --light-brown-oklch: oklch(0.57 0.135 57.3);
}

.element {
  color: var(--light-brown);
  background-color: hsl(31 91% 36%);
  border-color: oklch(0.57 0.135 57.3);
}

Tailwind CSS v4

@theme {
  --color-light-brown: #b15f08;
  --color-light-brown-50: #ffedcf;
  --color-light-brown-100: #ffdebb;
  --color-light-brown-200: #ffc79a;
  --color-light-brown-300: #eba66f;
  --color-light-brown-400: #da8847;
  --color-light-brown-500: #c76b04;
  --color-light-brown-600: #a85b0d;
  --color-light-brown-700: #87480b;
  --color-light-brown-800: #653408;
  --color-light-brown-900: #472306;
  --color-light-brown-950: #2e1200;
}

SCSS

$light-brown: #b15f08;
$light-brown-rgb: 177, 95, 8;
$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);
}