#5F8041

CSS

:root {
  --beyond-the-pines: #5f8041;
  --beyond-the-pines-rgb: 95 128 65;
  --beyond-the-pines-oklch: oklch(0.559 0.098 131.6);
}

.element {
  color: var(--beyond-the-pines);
  background-color: hsl(91 33% 38%);
  border-color: oklch(0.559 0.098 131.6);
}

Tailwind CSS v4

@theme {
  --color-beyond-the-pines: #5f8041;
  --color-beyond-the-pines-50: #eafce0;
  --color-beyond-the-pines-100: #dbf0cf;
  --color-beyond-the-pines-200: #c4deb4;
  --color-beyond-the-pines-300: #a3c390;
  --color-beyond-the-pines-400: #89ab6d;
  --color-beyond-the-pines-500: #6e934c;
  --color-beyond-the-pines-600: #5e7d41;
  --color-beyond-the-pines-700: #4b6434;
  --color-beyond-the-pines-800: #374923;
  --color-beyond-the-pines-900: #263317;
  --color-beyond-the-pines-950: #141e08;
}

SCSS

$beyond-the-pines: #5f8041;
$beyond-the-pines-rgb: 95, 128, 65;
$beyond-the-pines-light: mix(#fff, $beyond-the-pines, 20%);
$beyond-the-pines-dark: mix(#000, $beyond-the-pines, 20%);

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