#538043

CSS

:root {
  --shepherd-s-green: #538043;
  --shepherd-s-green-rgb: 83 128 67;
  --shepherd-s-green-oklch: oklch(0.552 0.102 138);
}

.element {
  color: var(--shepherd-s-green);
  background-color: hsl(104 31% 38%);
  border-color: oklch(0.552 0.102 138);
}

Tailwind CSS v4

@theme {
  --color-shepherd-s-green: #538043;
  --color-shepherd-s-green-50: #e6fde1;
  --color-shepherd-s-green-100: #d7f1d1;
  --color-shepherd-s-green-200: #bee0b6;
  --color-shepherd-s-green-300: #9cc593;
  --color-shepherd-s-green-400: #80ad71;
  --color-shepherd-s-green-500: #639651;
  --color-shepherd-s-green-600: #547f45;
  --color-shepherd-s-green-700: #436637;
  --color-shepherd-s-green-800: #324a25;
  --color-shepherd-s-green-900: #223419;
  --color-shepherd-s-green-950: #111f0a;
}

SCSS

$shepherd-s-green: #538043;
$shepherd-s-green-rgb: 83, 128, 67;
$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);
}