#8B6B00

CSS

:root {
  --muddy-brown: #8b6b00;
  --muddy-brown-rgb: 139 107 0;
  --muddy-brown-oklch: oklch(0.544 0.111 87.9);
}

.element {
  color: var(--muddy-brown);
  background-color: hsl(46 100% 27%);
  border-color: oklch(0.544 0.111 87.9);
}

Tailwind CSS v4

@theme {
  --color-muddy-brown: #8b6b00;
  --color-muddy-brown-50: #fff4d2;
  --color-muddy-brown-100: #f6e7be;
  --color-muddy-brown-200: #e7d39e;
  --color-muddy-brown-300: #ceb574;
  --color-muddy-brown-400: #ba9a4b;
  --color-muddy-brown-500: #a58111;
  --color-muddy-brown-600: #8b6d14;
  --color-muddy-brown-700: #705711;
  --color-muddy-brown-800: #533f09;
  --color-muddy-brown-900: #3a2b06;
  --color-muddy-brown-950: #241800;
}

SCSS

$muddy-brown: #8b6b00;
$muddy-brown-rgb: 139, 107, 0;
$muddy-brown-light: mix(#fff, $muddy-brown, 20%);
$muddy-brown-dark: mix(#000, $muddy-brown, 20%);

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