#845836

CSS

:root {
  --dark-wood: #845836;
  --dark-wood-rgb: 132 88 54;
  --dark-wood-oklch: oklch(0.501 0.076 57.6);
}

.element {
  color: var(--dark-wood);
  background-color: hsl(26 42% 36%);
  border-color: oklch(0.501 0.076 57.6);
}

Tailwind CSS v4

@theme {
  --color-dark-wood: #845836;
  --color-dark-wood-50: #fff1e0;
  --color-dark-wood-100: #fce3cf;
  --color-dark-wood-200: #edcdb5;
  --color-dark-wood-300: #d5af91;
  --color-dark-wood-400: #c19472;
  --color-dark-wood-500: #ac7953;
  --color-dark-wood-600: #926747;
  --color-dark-wood-700: #755238;
  --color-dark-wood-800: #573b28;
  --color-dark-wood-900: #3d291b;
  --color-dark-wood-950: #26160b;
}

SCSS

$dark-wood: #845836;
$dark-wood-rgb: 132, 88, 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);
}