#667C44

CSS

:root {
  --beyond-the-pines: #667c44;
  --beyond-the-pines-rgb: 102 124 68;
  --beyond-the-pines-oklch: oklch(0.555 0.084 126.5);
}

.element {
  color: var(--beyond-the-pines);
  background-color: hsl(84 29% 38%);
  border-color: oklch(0.555 0.084 126.5);
}

Tailwind CSS v4

@theme {
  --color-beyond-the-pines: #667c44;
  --color-beyond-the-pines-50: #eefae1;
  --color-beyond-the-pines-100: #dfeed0;
  --color-beyond-the-pines-200: #c9dcb6;
  --color-beyond-the-pines-300: #aac092;
  --color-beyond-the-pines-400: #91a871;
  --color-beyond-the-pines-500: #789051;
  --color-beyond-the-pines-600: #657a45;
  --color-beyond-the-pines-700: #516237;
  --color-beyond-the-pines-800: #3c4726;
  --color-beyond-the-pines-900: #293119;
  --color-beyond-the-pines-950: #171d0a;
}

SCSS

$beyond-the-pines: #667c44;
$beyond-the-pines-rgb: 102, 124, 68;
$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);
}