#67712E

CSS

:root {
  --muddy-green: #67712e;
  --muddy-green-rgb: 103 113 46;
  --muddy-green-oklch: oklch(0.525 0.092 116.8);
}

.element {
  color: var(--muddy-green);
  background-color: hsl(69 42% 31%);
  border-color: oklch(0.525 0.092 116.8);
}

Tailwind CSS v4

@theme {
  --color-muddy-green: #67712e;
  --color-muddy-green-50: #f2f9dc;
  --color-muddy-green-100: #e4edcb;
  --color-muddy-green-200: #d0daae;
  --color-muddy-green-300: #b2be89;
  --color-muddy-green-400: #9ba666;
  --color-muddy-green-500: #828e43;
  --color-muddy-green-600: #6e7839;
  --color-muddy-green-700: #58602e;
  --color-muddy-green-800: #41461f;
  --color-muddy-green-900: #2d3014;
  --color-muddy-green-950: #1a1d06;
}

SCSS

$muddy-green: #67712e;
$muddy-green-rgb: 103, 113, 46;
$muddy-green-light: mix(#fff, $muddy-green, 20%);
$muddy-green-dark: mix(#000, $muddy-green, 20%);

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