#845536

CSS

:root {
  --dark-wood: #845536;
  --dark-wood-rgb: 132 85 54;
  --dark-wood-oklch: oklch(0.495 0.077 53.4);
}

.element {
  color: var(--dark-wood);
  background-color: hsl(24 42% 36%);
  border-color: oklch(0.495 0.077 53.4);
}

Tailwind CSS v4

@theme {
  --color-dark-wood: #845536;
  --color-dark-wood-50: #fff0e1;
  --color-dark-wood-100: #fde2d0;
  --color-dark-wood-200: #efccb5;
  --color-dark-wood-300: #d7ae92;
  --color-dark-wood-400: #c39273;
  --color-dark-wood-500: #af7854;
  --color-dark-wood-600: #936648;
  --color-dark-wood-700: #765139;
  --color-dark-wood-800: #583b29;
  --color-dark-wood-900: #3d281c;
  --color-dark-wood-950: #27160c;
}

SCSS

$dark-wood: #845536;
$dark-wood-rgb: 132, 85, 54;
$dark-wood-light: mix(#fff, $dark-wood, 20%);
$dark-wood-dark: mix(#000, $dark-wood, 20%);

.element {
  color: $dark-wood;
  box-shadow: 0 0 0 2px rgba($dark-wood, 0.35);
}