#5F7B64

CSS

:root {
  --clouded-pine: #5f7b64;
  --clouded-pine-rgb: 95 123 100;
  --clouded-pine-oklch: oklch(0.554 0.048 149.9);
}

.element {
  color: var(--clouded-pine);
  background-color: hsl(131 13% 43%);
  border-color: oklch(0.554 0.048 149.9);
}

Tailwind CSS v4

@theme {
  --color-clouded-pine: #5f7b64;
  --color-clouded-pine-50: #ecf9ee;
  --color-clouded-pine-100: #ddede0;
  --color-clouded-pine-200: #c6dbca;
  --color-clouded-pine-300: #a6bfac;
  --color-clouded-pine-400: #8ba790;
  --color-clouded-pine-500: #709075;
  --color-clouded-pine-600: #5f7964;
  --color-clouded-pine-700: #4c614f;
  --color-clouded-pine-800: #374739;
  --color-clouded-pine-900: #263127;
  --color-clouded-pine-950: #141d15;
}

SCSS

$clouded-pine: #5f7b64;
$clouded-pine-rgb: 95, 123, 100;
$clouded-pine-light: mix(#fff, $clouded-pine, 20%);
$clouded-pine-dark: mix(#000, $clouded-pine, 20%);

.element {
  color: $clouded-pine;
  box-shadow: 0 0 0 2px rgba($clouded-pine, 0.35);
}