#597F41

CSS

:root {
  --shepherd-s-green: #597f41;
  --shepherd-s-green-rgb: 89 127 65;
  --shepherd-s-green-oklch: oklch(0.553 0.099 134.4);
}

.element {
  color: var(--shepherd-s-green);
  background-color: hsl(97 32% 38%);
  border-color: oklch(0.553 0.099 134.4);
}

Tailwind CSS v4

@theme {
  --color-shepherd-s-green: #597f41;
  --color-shepherd-s-green-50: #e9fce0;
  --color-shepherd-s-green-100: #d9f0d0;
  --color-shepherd-s-green-200: #c1dfb5;
  --color-shepherd-s-green-300: #a0c491;
  --color-shepherd-s-green-400: #86ac6f;
  --color-shepherd-s-green-500: #6a954f;
  --color-shepherd-s-green-600: #5a7e43;
  --color-shepherd-s-green-700: #476535;
  --color-shepherd-s-green-800: #354a24;
  --color-shepherd-s-green-900: #243318;
  --color-shepherd-s-green-950: #131f09;
}

SCSS

$shepherd-s-green: #597f41;
$shepherd-s-green-rgb: 89, 127, 65;
$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);
}