#677E4B

CSS

:root {
  --beyond-the-pines: #677e4b;
  --beyond-the-pines-rgb: 103 126 75;
  --beyond-the-pines-oklch: oklch(0.562 0.079 128.5);
}

.element {
  color: var(--beyond-the-pines);
  background-color: hsl(87 25% 39%);
  border-color: oklch(0.562 0.079 128.5);
}

Tailwind CSS v4

@theme {
  --color-beyond-the-pines: #677e4b;
  --color-beyond-the-pines-50: #eefae3;
  --color-beyond-the-pines-100: #dfeed3;
  --color-beyond-the-pines-200: #c9dcb9;
  --color-beyond-the-pines-300: #aac096;
  --color-beyond-the-pines-400: #90a876;
  --color-beyond-the-pines-500: #769057;
  --color-beyond-the-pines-600: #647a4a;
  --color-beyond-the-pines-700: #50623b;
  --color-beyond-the-pines-800: #3b4729;
  --color-beyond-the-pines-900: #29311b;
  --color-beyond-the-pines-950: #171d0c;
}

SCSS

$beyond-the-pines: #677e4b;
$beyond-the-pines-rgb: 103, 126, 75;
$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);
}