#5A8143

CSS

:root {
  --shepherd-s-green: #5a8143;
  --shepherd-s-green-rgb: 90 129 67;
  --shepherd-s-green-oklch: oklch(0.559 0.1 134.9);
}

.element {
  color: var(--shepherd-s-green);
  background-color: hsl(98 32% 38%);
  border-color: oklch(0.559 0.1 134.9);
}

Tailwind CSS v4

@theme {
  --color-shepherd-s-green: #5a8143;
  --color-shepherd-s-green-50: #e8fce0;
  --color-shepherd-s-green-100: #d9f0d0;
  --color-shepherd-s-green-200: #c1dfb5;
  --color-shepherd-s-green-300: #a0c491;
  --color-shepherd-s-green-400: #85ac6f;
  --color-shepherd-s-green-500: #69954f;
  --color-shepherd-s-green-600: #597e43;
  --color-shepherd-s-green-700: #476536;
  --color-shepherd-s-green-800: #354a24;
  --color-shepherd-s-green-900: #243318;
  --color-shepherd-s-green-950: #131f09;
}

SCSS

$shepherd-s-green: #5a8143;
$shepherd-s-green-rgb: 90, 129, 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);
}