#6C7D45

CSS

:root {
  --beyond-the-pines: #6c7d45;
  --beyond-the-pines-rgb: 108 125 69;
  --beyond-the-pines-oklch: oklch(0.562 0.082 122.9);
}

.element {
  color: var(--beyond-the-pines);
  background-color: hsl(78 29% 38%);
  border-color: oklch(0.562 0.082 122.9);
}

Tailwind CSS v4

@theme {
  --color-beyond-the-pines: #6c7d45;
  --color-beyond-the-pines-50: #f0fae0;
  --color-beyond-the-pines-100: #e1edd0;
  --color-beyond-the-pines-200: #ccdbb5;
  --color-beyond-the-pines-300: #aebf91;
  --color-beyond-the-pines-400: #95a770;
  --color-beyond-the-pines-500: #7c8f50;
  --color-beyond-the-pines-600: #697944;
  --color-beyond-the-pines-700: #546136;
  --color-beyond-the-pines-800: #3e4725;
  --color-beyond-the-pines-900: #2b3119;
  --color-beyond-the-pines-950: #181d0a;
}

SCSS

$beyond-the-pines: #6c7d45;
$beyond-the-pines-rgb: 108, 125, 69;
$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);
}