#57805F

CSS

:root {
  --clouded-pine: #57805f;
  --clouded-pine-rgb: 87 128 95;
  --clouded-pine-oklch: oklch(0.56 0.068 149.8);
}

.element {
  color: var(--clouded-pine);
  background-color: hsl(132 19% 42%);
  border-color: oklch(0.56 0.068 149.8);
}

Tailwind CSS v4

@theme {
  --color-clouded-pine: #57805f;
  --color-clouded-pine-50: #e8fbec;
  --color-clouded-pine-100: #d8efdd;
  --color-clouded-pine-200: #c0ddc6;
  --color-clouded-pine-300: #9ec2a6;
  --color-clouded-pine-400: #82aa89;
  --color-clouded-pine-500: #65936e;
  --color-clouded-pine-600: #567d5d;
  --color-clouded-pine-700: #44644a;
  --color-clouded-pine-800: #324935;
  --color-clouded-pine-900: #223324;
  --color-clouded-pine-950: #111e13;
}

SCSS

$clouded-pine: #57805f;
$clouded-pine-rgb: 87, 128, 95;
$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);
}