#6C7D3F

CSS

:root {
  --beyond-the-pines: #6c7d3f;
  --beyond-the-pines-rgb: 108 125 63;
  --beyond-the-pines-oklch: oklch(0.561 0.089 121.9);
}

.element {
  color: var(--beyond-the-pines);
  background-color: hsl(76 33% 37%);
  border-color: oklch(0.561 0.089 121.9);
}

Tailwind CSS v4

@theme {
  --color-beyond-the-pines: #6c7d3f;
  --color-beyond-the-pines-50: #f0fade;
  --color-beyond-the-pines-100: #e1edcd;
  --color-beyond-the-pines-200: #ccdbb2;
  --color-beyond-the-pines-300: #aec08d;
  --color-beyond-the-pines-400: #95a76b;
  --color-beyond-the-pines-500: #7c8f4a;
  --color-beyond-the-pines-600: #69793f;
  --color-beyond-the-pines-700: #546132;
  --color-beyond-the-pines-800: #3e4722;
  --color-beyond-the-pines-900: #2b3117;
  --color-beyond-the-pines-950: #181d08;
}

SCSS

$beyond-the-pines: #6c7d3f;
$beyond-the-pines-rgb: 108, 125, 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);
}