#61803A

CSS

:root {
  --beyond-the-pines: #61803a;
  --beyond-the-pines-rgb: 97 128 58;
  --beyond-the-pines-oklch: oklch(0.56 0.104 129.1);
}

.element {
  color: var(--beyond-the-pines);
  background-color: hsl(87 38% 36%);
  border-color: oklch(0.56 0.104 129.1);
}

Tailwind CSS v4

@theme {
  --color-beyond-the-pines: #61803a;
  --color-beyond-the-pines-50: #ebfcdd;
  --color-beyond-the-pines-100: #dcf0cc;
  --color-beyond-the-pines-200: #c5deb0;
  --color-beyond-the-pines-300: #a5c38b;
  --color-beyond-the-pines-400: #8bab67;
  --color-beyond-the-pines-500: #709345;
  --color-beyond-the-pines-600: #5f7d3b;
  --color-beyond-the-pines-700: #4c642f;
  --color-beyond-the-pines-800: #39491f;
  --color-beyond-the-pines-900: #273314;
  --color-beyond-the-pines-950: #151e06;
}

SCSS

$beyond-the-pines: #61803a;
$beyond-the-pines-rgb: 97, 128, 58;
$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);
}