#7FA574

CSS

:root {
  --garden-of-eden: #7fa574;
  --garden-of-eden-rgb: 127 165 116;
  --garden-of-eden-oklch: oklch(0.681 0.082 138.8);
}

.element {
  color: var(--garden-of-eden);
  background-color: hsl(107 21% 55%);
  border-color: oklch(0.681 0.082 138.8);
}

Tailwind CSS v4

@theme {
  --color-garden-of-eden: #7fa574;
  --color-garden-of-eden-50: #e9fbe6;
  --color-garden-of-eden-100: #daefd6;
  --color-garden-of-eden-200: #c2ddbd;
  --color-garden-of-eden-300: #a1c29b;
  --color-garden-of-eden-400: #86aa7c;
  --color-garden-of-eden-500: #6a935e;
  --color-garden-of-eden-600: #5a7d50;
  --color-garden-of-eden-700: #486440;
  --color-garden-of-eden-800: #35492d;
  --color-garden-of-eden-900: #24331e;
  --color-garden-of-eden-950: #131e0e;
}

SCSS

$garden-of-eden: #7fa574;
$garden-of-eden-rgb: 127, 165, 116;
$garden-of-eden-light: mix(#fff, $garden-of-eden, 20%);
$garden-of-eden-dark: mix(#000, $garden-of-eden, 20%);

.element {
  color: $garden-of-eden;
  box-shadow: 0 0 0 2px rgba($garden-of-eden, 0.35);
}