#627330

CSS

:root {
  --muddy-green: #627330;
  --muddy-green-rgb: 98 115 48;
  --muddy-green-oklch: oklch(0.526 0.094 121.6);
}

.element {
  color: var(--muddy-green);
  background-color: hsl(75 41% 32%);
  border-color: oklch(0.526 0.094 121.6);
}

Tailwind CSS v4

@theme {
  --color-muddy-green: #627330;
  --color-muddy-green-50: #effadd;
  --color-muddy-green-100: #e1eecb;
  --color-muddy-green-200: #ccdcaf;
  --color-muddy-green-300: #adc08a;
  --color-muddy-green-400: #95a767;
  --color-muddy-green-500: #7c9044;
  --color-muddy-green-600: #697a3b;
  --color-muddy-green-700: #54612f;
  --color-muddy-green-800: #3e471f;
  --color-muddy-green-900: #2b3115;
  --color-muddy-green-950: #181d06;
}

SCSS

$muddy-green: #627330;
$muddy-green-rgb: 98, 115, 48;
$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);
}