#6C7B36

CSS

:root {
  --muddy-green: #6c7b36;
  --muddy-green-rgb: 108 123 54;
  --muddy-green-oklch: oklch(0.555 0.096 119.8);
}

.element {
  color: var(--muddy-green);
  background-color: hsl(73 39% 35%);
  border-color: oklch(0.555 0.096 119.8);
}

Tailwind CSS v4

@theme {
  --color-muddy-green: #6c7b36;
  --color-muddy-green-50: #f0fadc;
  --color-muddy-green-100: #e2eeca;
  --color-muddy-green-200: #cddbae;
  --color-muddy-green-300: #afc089;
  --color-muddy-green-400: #97a765;
  --color-muddy-green-500: #7e8f42;
  --color-muddy-green-600: #6b7939;
  --color-muddy-green-700: #55612d;
  --color-muddy-green-800: #3f471e;
  --color-muddy-green-900: #2c3114;
  --color-muddy-green-950: #191d06;
}

SCSS

$muddy-green: #6c7b36;
$muddy-green-rgb: 108, 123, 54;
$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);
}