#607D43

CSS

:root {
  --beyond-the-pines: #607d43;
  --beyond-the-pines-rgb: 96 125 67;
  --beyond-the-pines-oklch: oklch(0.553 0.09 130.6);
}

.element {
  color: var(--beyond-the-pines);
  background-color: hsl(90 30% 38%);
  border-color: oklch(0.553 0.09 130.6);
}

Tailwind CSS v4

@theme {
  --color-beyond-the-pines: #607d43;
  --color-beyond-the-pines-50: #ebfbe1;
  --color-beyond-the-pines-100: #ddefd0;
  --color-beyond-the-pines-200: #c6ddb6;
  --color-beyond-the-pines-300: #a6c292;
  --color-beyond-the-pines-400: #8caa71;
  --color-beyond-the-pines-500: #719251;
  --color-beyond-the-pines-600: #607c45;
  --color-beyond-the-pines-700: #4d6337;
  --color-beyond-the-pines-800: #394826;
  --color-beyond-the-pines-900: #273219;
  --color-beyond-the-pines-950: #151e0a;
}

SCSS

$beyond-the-pines: #607d43;
$beyond-the-pines-rgb: 96, 125, 67;
$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);
}