#528337

CSS

:root {
  --shepherd-s-green: #528337;
  --shepherd-s-green-rgb: 82 131 55;
  --shepherd-s-green-oklch: oklch(0.557 0.12 135.8);
}

.element {
  color: var(--shepherd-s-green);
  background-color: hsl(99 41% 36%);
  border-color: oklch(0.557 0.12 135.8);
}

Tailwind CSS v4

@theme {
  --color-shepherd-s-green: #528337;
  --color-shepherd-s-green-50: #e5fedd;
  --color-shepherd-s-green-100: #d5f2cb;
  --color-shepherd-s-green-200: #bce1af;
  --color-shepherd-s-green-300: #99c68a;
  --color-shepherd-s-green-400: #7eaf66;
  --color-shepherd-s-green-500: #609842;
  --color-shepherd-s-green-600: #528039;
  --color-shepherd-s-green-700: #41672d;
  --color-shepherd-s-green-800: #314b1d;
  --color-shepherd-s-green-900: #213413;
  --color-shepherd-s-green-950: #101f05;
}

SCSS

$shepherd-s-green: #528337;
$shepherd-s-green-rgb: 82, 131, 55;
$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);
}