#5B7F5E

CSS

:root {
  --clouded-pine: #5b7f5e;
  --clouded-pine-rgb: 91 127 94;
  --clouded-pine-oklch: oklch(0.56 0.065 146.8);
}

.element {
  color: var(--clouded-pine);
  background-color: hsl(125 17% 43%);
  border-color: oklch(0.56 0.065 146.8);
}

Tailwind CSS v4

@theme {
  --color-clouded-pine: #5b7f5e;
  --color-clouded-pine-50: #e9fbeb;
  --color-clouded-pine-100: #daeedc;
  --color-clouded-pine-200: #c2dcc5;
  --color-clouded-pine-300: #a1c1a5;
  --color-clouded-pine-400: #86a988;
  --color-clouded-pine-500: #6a926d;
  --color-clouded-pine-600: #5a7c5c;
  --color-clouded-pine-700: #47634a;
  --color-clouded-pine-800: #344834;
  --color-clouded-pine-900: #243224;
  --color-clouded-pine-950: #121e13;
}

SCSS

$clouded-pine: #5b7f5e;
$clouded-pine-rgb: 91, 127, 94;
$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);
}