#667F35

CSS

:root {
  --beyond-the-pines: #667f35;
  --beyond-the-pines-rgb: 102 127 53;
  --beyond-the-pines-oklch: oklch(0.56 0.105 125.3);
}

.element {
  color: var(--beyond-the-pines);
  background-color: hsl(80 41% 35%);
  border-color: oklch(0.56 0.105 125.3);
}

Tailwind CSS v4

@theme {
  --color-beyond-the-pines: #667f35;
  --color-beyond-the-pines-50: #edfbdb;
  --color-beyond-the-pines-100: #deefca;
  --color-beyond-the-pines-200: #c8ddad;
  --color-beyond-the-pines-300: #a9c287;
  --color-beyond-the-pines-400: #90aa63;
  --color-beyond-the-pines-500: #76923f;
  --color-beyond-the-pines-600: #647c36;
  --color-beyond-the-pines-700: #50632b;
  --color-beyond-the-pines-800: #3b481c;
  --color-beyond-the-pines-900: #293212;
  --color-beyond-the-pines-950: #171e05;
}

SCSS

$beyond-the-pines: #667f35;
$beyond-the-pines-rgb: 102, 127, 53;
$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);
}