#697C2C

CSS

:root {
  --muddy-green: #697c2c;
  --muddy-green-rgb: 105 124 44;
  --muddy-green-oklch: oklch(0.554 0.108 121.4);
}

.element {
  color: var(--muddy-green);
  background-color: hsl(74 48% 33%);
  border-color: oklch(0.554 0.108 121.4);
}

Tailwind CSS v4

@theme {
  --color-muddy-green: #697c2c;
  --color-muddy-green-50: #effbd9;
  --color-muddy-green-100: #e1eec7;
  --color-muddy-green-200: #cbddaa;
  --color-muddy-green-300: #acc183;
  --color-muddy-green-400: #94a85e;
  --color-muddy-green-500: #7b9137;
  --color-muddy-green-600: #687b30;
  --color-muddy-green-700: #536226;
  --color-muddy-green-800: #3e4818;
  --color-muddy-green-900: #2b3210;
  --color-muddy-green-950: #181d03;
}

SCSS

$muddy-green: #697c2c;
$muddy-green-rgb: 105, 124, 44;
$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);
}