#677E3A

CSS

:root {
  --beyond-the-pines: #677e3a;
  --beyond-the-pines-rgb: 103 126 58;
  --beyond-the-pines-oklch: oklch(0.559 0.098 125);
}

.element {
  color: var(--beyond-the-pines);
  background-color: hsl(80 37% 36%);
  border-color: oklch(0.559 0.098 125);
}

Tailwind CSS v4

@theme {
  --color-beyond-the-pines: #677e3a;
  --color-beyond-the-pines-50: #edfbdd;
  --color-beyond-the-pines-100: #dfefcc;
  --color-beyond-the-pines-200: #c9ddb0;
  --color-beyond-the-pines-300: #aac18b;
  --color-beyond-the-pines-400: #91a967;
  --color-beyond-the-pines-500: #779145;
  --color-beyond-the-pines-600: #657b3b;
  --color-beyond-the-pines-700: #51622f;
  --color-beyond-the-pines-800: #3c481f;
  --color-beyond-the-pines-900: #293215;
  --color-beyond-the-pines-950: #171e06;
}

SCSS

$beyond-the-pines: #677e3a;
$beyond-the-pines-rgb: 103, 126, 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);
}