#60741F

CSS

:root {
  --muddy-green: #60741f;
  --muddy-green-rgb: 96 116 31;
  --muddy-green-oklch: oklch(0.525 0.111 121.9);
}

.element {
  color: var(--muddy-green);
  background-color: hsl(74 58% 29%);
  border-color: oklch(0.525 0.111 121.9);
}

Tailwind CSS v4

@theme {
  --color-muddy-green: #60741f;
  --color-muddy-green-50: #eefbd9;
  --color-muddy-green-100: #e0efc6;
  --color-muddy-green-200: #cadda9;
  --color-muddy-green-300: #abc182;
  --color-muddy-green-400: #93a95c;
  --color-muddy-green-500: #7a9134;
  --color-muddy-green-600: #677b2d;
  --color-muddy-green-700: #536224;
  --color-muddy-green-800: #3e4817;
  --color-muddy-green-900: #2a320e;
  --color-muddy-green-950: #181e02;
}

SCSS

$muddy-green: #60741f;
$muddy-green-rgb: 96, 116, 31;
$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);
}