#588059

CSS

:root {
  --clouded-pine: #588059;
  --clouded-pine-rgb: 88 128 89;
  --clouded-pine-oklch: oklch(0.559 0.074 145.1);
}

.element {
  color: var(--clouded-pine);
  background-color: hsl(122 19% 42%);
  border-color: oklch(0.559 0.074 145.1);
}

Tailwind CSS v4

@theme {
  --color-clouded-pine: #588059;
  --color-clouded-pine-50: #e8fbe9;
  --color-clouded-pine-100: #d8efda;
  --color-clouded-pine-200: #c0ddc2;
  --color-clouded-pine-300: #9fc2a2;
  --color-clouded-pine-400: #83ab84;
  --color-clouded-pine-500: #669367;
  --color-clouded-pine-600: #577d58;
  --color-clouded-pine-700: #456446;
  --color-clouded-pine-800: #334931;
  --color-clouded-pine-900: #233322;
  --color-clouded-pine-950: #121e11;
}

SCSS

$clouded-pine: #588059;
$clouded-pine-rgb: 88, 128, 89;
$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);
}