#53770B

CSS

:root {
  --over-the-hills: #53770b;
  --over-the-hills-rgb: 83 119 11;
  --over-the-hills-oklch: oklch(0.523 0.132 128);
}

.element {
  color: var(--over-the-hills);
  background-color: hsl(80 83% 25%);
  border-color: oklch(0.523 0.132 128);
}

Tailwind CSS v4

@theme {
  --color-over-the-hills: #53770b;
  --color-over-the-hills-50: #e9fdd6;
  --color-over-the-hills-100: #d9f1c3;
  --color-over-the-hills-200: #c2e0a4;
  --color-over-the-hills-300: #a1c57c;
  --color-over-the-hills-400: #88ad53;
  --color-over-the-hills-500: #6c9625;
  --color-over-the-hills-600: #5c7f22;
  --color-over-the-hills-700: #49651b;
  --color-over-the-hills-800: #374a0f;
  --color-over-the-hills-900: #253309;
  --color-over-the-hills-950: #141f00;
}

SCSS

$over-the-hills: #53770b;
$over-the-hills-rgb: 83, 119, 11;
$over-the-hills-light: mix(#fff, $over-the-hills, 20%);
$over-the-hills-dark: mix(#000, $over-the-hills, 20%);

.element {
  color: $over-the-hills;
  box-shadow: 0 0 0 2px rgba($over-the-hills, 0.35);
}