#667C3B

CSS

:root {
  --beyond-the-pines: #667c3b;
  --beyond-the-pines-rgb: 102 124 59;
  --beyond-the-pines-oklch: oklch(0.553 0.094 124.8);
}

.element {
  color: var(--beyond-the-pines);
  background-color: hsl(80 36% 36%);
  border-color: oklch(0.553 0.094 124.8);
}

Tailwind CSS v4

@theme {
  --color-beyond-the-pines: #667c3b;
  --color-beyond-the-pines-50: #eefbde;
  --color-beyond-the-pines-100: #dfeecd;
  --color-beyond-the-pines-200: #c9dcb1;
  --color-beyond-the-pines-300: #aac18c;
  --color-beyond-the-pines-400: #92a86a;
  --color-beyond-the-pines-500: #789148;
  --color-beyond-the-pines-600: #667b3e;
  --color-beyond-the-pines-700: #516231;
  --color-beyond-the-pines-800: #3c4821;
  --color-beyond-the-pines-900: #293216;
  --color-beyond-the-pines-950: #171e07;
}

SCSS

$beyond-the-pines: #667c3b;
$beyond-the-pines-rgb: 102, 124, 59;
$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);
}