#6C6F00

CSS

:root {
  --topiary-green: #6c6f00;
  --topiary-green-rgb: 108 111 0;
  --topiary-green-oklch: oklch(0.522 0.115 111.6);
}

.element {
  color: var(--topiary-green);
  background-color: hsl(62 100% 22%);
  border-color: oklch(0.522 0.115 111.6);
}

Tailwind CSS v4

@theme {
  --color-topiary-green: #6c6f00;
  --color-topiary-green-50: #f4f9d4;
  --color-topiary-green-100: #e7edc1;
  --color-topiary-green-200: #d3daa2;
  --color-topiary-green-300: #b7be79;
  --color-topiary-green-400: #a0a550;
  --color-topiary-green-500: #898d1e;
  --color-topiary-green-600: #74771d;
  --color-topiary-green-700: #5d5f17;
  --color-topiary-green-800: #45450d;
  --color-topiary-green-900: #303008;
  --color-topiary-green-950: #1c1c00;
}

SCSS

$topiary-green: #6c6f00;
$topiary-green-rgb: 108, 111, 0;
$topiary-green-light: mix(#fff, $topiary-green, 20%);
$topiary-green-dark: mix(#000, $topiary-green, 20%);

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