#627325

CSS

:root {
  --muddy-green: #627325;
  --muddy-green-rgb: 98 115 37;
  --muddy-green-oklch: oklch(0.525 0.105 120.7);
}

.element {
  color: var(--muddy-green);
  background-color: hsl(73 51% 30%);
  border-color: oklch(0.525 0.105 120.7);
}

Tailwind CSS v4

@theme {
  --color-muddy-green: #627325;
  --color-muddy-green-50: #effbda;
  --color-muddy-green-100: #e1eec8;
  --color-muddy-green-200: #ccdcab;
  --color-muddy-green-300: #adc184;
  --color-muddy-green-400: #96a85f;
  --color-muddy-green-500: #7d903a;
  --color-muddy-green-600: #697a32;
  --color-muddy-green-700: #546228;
  --color-muddy-green-800: #3f471a;
  --color-muddy-green-900: #2b3111;
  --color-muddy-green-950: #191d04;
}

SCSS

$muddy-green: #627325;
$muddy-green-rgb: 98, 115, 37;
$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);
}