#578148

CSS

:root {
  --shepherd-s-green: #578148;
  --shepherd-s-green-rgb: 87 129 72;
  --shepherd-s-green-oklch: oklch(0.558 0.096 137.9);
}

.element {
  color: var(--shepherd-s-green);
  background-color: hsl(104 28% 39%);
  border-color: oklch(0.558 0.096 137.9);
}

Tailwind CSS v4

@theme {
  --color-shepherd-s-green: #578148;
  --color-shepherd-s-green-50: #e7fce2;
  --color-shepherd-s-green-100: #d8f0d2;
  --color-shepherd-s-green-200: #bfdfb8;
  --color-shepherd-s-green-300: #9ec495;
  --color-shepherd-s-green-400: #82ac74;
  --color-shepherd-s-green-500: #669555;
  --color-shepherd-s-green-600: #567e48;
  --color-shepherd-s-green-700: #45653a;
  --color-shepherd-s-green-800: #334a27;
  --color-shepherd-s-green-900: #23331a;
  --color-shepherd-s-green-950: #121f0b;
}

SCSS

$shepherd-s-green: #578148;
$shepherd-s-green-rgb: 87, 129, 72;
$shepherd-s-green-light: mix(#fff, $shepherd-s-green, 20%);
$shepherd-s-green-dark: mix(#000, $shepherd-s-green, 20%);

.element {
  color: $shepherd-s-green;
  box-shadow: 0 0 0 2px rgba($shepherd-s-green, 0.35);
}