#667C45

CSS

:root {
  --beyond-the-pines: #667c45;
  --beyond-the-pines-rgb: 102 124 69;
  --beyond-the-pines-oklch: oklch(0.555 0.083 126.8);
}

.element {
  color: var(--beyond-the-pines);
  background-color: hsl(84 28% 38%);
  border-color: oklch(0.555 0.083 126.8);
}

Tailwind CSS v4

@theme {
  --color-beyond-the-pines: #667c45;
  --color-beyond-the-pines-50: #eefae1;
  --color-beyond-the-pines-100: #dfeed1;
  --color-beyond-the-pines-200: #c9dcb6;
  --color-beyond-the-pines-300: #aac093;
  --color-beyond-the-pines-400: #91a872;
  --color-beyond-the-pines-500: #789052;
  --color-beyond-the-pines-600: #657a46;
  --color-beyond-the-pines-700: #516238;
  --color-beyond-the-pines-800: #3c4727;
  --color-beyond-the-pines-900: #29311a;
  --color-beyond-the-pines-950: #171d0a;
}

SCSS

$beyond-the-pines: #667c45;
$beyond-the-pines-rgb: 102, 124, 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);
}