#697C2B

CSS

:root {
  --muddy-green: #697c2b;
  --muddy-green-rgb: 105 124 43;
  --muddy-green-oklch: oklch(0.554 0.109 121.3);
}

.element {
  color: var(--muddy-green);
  background-color: hsl(74 49% 33%);
  border-color: oklch(0.554 0.109 121.3);
}

Tailwind CSS v4

@theme {
  --color-muddy-green: #697c2b;
  --color-muddy-green-50: #effbd9;
  --color-muddy-green-100: #e1efc7;
  --color-muddy-green-200: #cbdda9;
  --color-muddy-green-300: #acc183;
  --color-muddy-green-400: #94a85d;
  --color-muddy-green-500: #7b9136;
  --color-muddy-green-600: #687b2f;
  --color-muddy-green-700: #536225;
  --color-muddy-green-800: #3e4818;
  --color-muddy-green-900: #2b320f;
  --color-muddy-green-950: #181d03;
}

SCSS

$muddy-green: #697c2b;
$muddy-green-rgb: 105, 124, 43;
$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);
}