#5F803F

CSS

:root {
  --beyond-the-pines: #5f803f;
  --beyond-the-pines-rgb: 95 128 63;
  --beyond-the-pines-oklch: oklch(0.559 0.1 131.1);
}

.element {
  color: var(--beyond-the-pines);
  background-color: hsl(90 34% 37%);
  border-color: oklch(0.559 0.1 131.1);
}

Tailwind CSS v4

@theme {
  --color-beyond-the-pines: #5f803f;
  --color-beyond-the-pines-50: #eafcdf;
  --color-beyond-the-pines-100: #dbf0ce;
  --color-beyond-the-pines-200: #c4deb3;
  --color-beyond-the-pines-300: #a3c38e;
  --color-beyond-the-pines-400: #8aab6c;
  --color-beyond-the-pines-500: #6e944a;
  --color-beyond-the-pines-600: #5e7d40;
  --color-beyond-the-pines-700: #4b6433;
  --color-beyond-the-pines-800: #374922;
  --color-beyond-the-pines-900: #263317;
  --color-beyond-the-pines-950: #141e08;
}

SCSS

$beyond-the-pines: #5f803f;
$beyond-the-pines-rgb: 95, 128, 63;
$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);
}