#856B00

CSS

:root {
  --muddy-brown: #856b00;
  --muddy-brown-rgb: 133 107 0;
  --muddy-brown-oklch: oklch(0.538 0.11 92);
}

.element {
  color: var(--muddy-brown);
  background-color: hsl(48 100% 26%);
  border-color: oklch(0.538 0.11 92);
}

Tailwind CSS v4

@theme {
  --color-muddy-brown: #856b00;
  --color-muddy-brown-50: #fff5d2;
  --color-muddy-brown-100: #f4e8bf;
  --color-muddy-brown-200: #e3d49f;
  --color-muddy-brown-300: #cab775;
  --color-muddy-brown-400: #b69c4c;
  --color-muddy-brown-500: #a08316;
  --color-muddy-brown-600: #886f17;
  --color-muddy-brown-700: #6d5913;
  --color-muddy-brown-800: #51400a;
  --color-muddy-brown-900: #392c07;
  --color-muddy-brown-950: #231900;
}

SCSS

$muddy-brown: #856b00;
$muddy-brown-rgb: 133, 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);
}