#78A672

CSS

:root {
  --garden-of-eden: #78a672;
  --garden-of-eden-rgb: 120 166 114;
  --garden-of-eden-oklch: oklch(0.678 0.09 141.7);
}

.element {
  color: var(--garden-of-eden);
  background-color: hsl(113 23% 55%);
  border-color: oklch(0.678 0.09 141.7);
}

Tailwind CSS v4

@theme {
  --color-garden-of-eden: #78a672;
  --color-garden-of-eden-50: #e7fce5;
  --color-garden-of-eden-100: #d7f0d5;
  --color-garden-of-eden-200: #bedfbc;
  --color-garden-of-eden-300: #9cc49a;
  --color-garden-of-eden-400: #80ac7b;
  --color-garden-of-eden-500: #63955d;
  --color-garden-of-eden-600: #547e4f;
  --color-garden-of-eden-700: #43653f;
  --color-garden-of-eden-800: #314a2c;
  --color-garden-of-eden-900: #22331d;
  --color-garden-of-eden-950: #111f0d;
}

SCSS

$garden-of-eden: #78a672;
$garden-of-eden-rgb: 120, 166, 114;
$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);
}