#7CA575

CSS

:root {
  --garden-of-eden: #7ca575;
  --garden-of-eden-rgb: 124 165 117;
  --garden-of-eden-oklch: oklch(0.679 0.082 140.9);
}

.element {
  color: var(--garden-of-eden);
  background-color: hsl(111 21% 55%);
  border-color: oklch(0.679 0.082 140.9);
}

Tailwind CSS v4

@theme {
  --color-garden-of-eden: #7ca575;
  --color-garden-of-eden-50: #e8fce6;
  --color-garden-of-eden-100: #d9efd7;
  --color-garden-of-eden-200: #c0debe;
  --color-garden-of-eden-300: #9fc39c;
  --color-garden-of-eden-400: #84ab7d;
  --color-garden-of-eden-500: #679460;
  --color-garden-of-eden-600: #587d52;
  --color-garden-of-eden-700: #466441;
  --color-garden-of-eden-800: #34492d;
  --color-garden-of-eden-900: #23331f;
  --color-garden-of-eden-950: #121e0e;
}

SCSS

$garden-of-eden: #7ca575;
$garden-of-eden-rgb: 124, 165, 117;
$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);
}