#6C7C26

CSS

:root {
  --topiary-green: #6c7c26;
  --topiary-green-rgb: 108 124 38;
  --topiary-green-oklch: oklch(0.556 0.111 119.3);
}

.element {
  color: var(--topiary-green);
  background-color: hsl(71 53% 32%);
  border-color: oklch(0.556 0.111 119.3);
}

Tailwind CSS v4

@theme {
  --color-topiary-green: #6c7c26;
  --color-topiary-green-50: #f0fbd8;
  --color-topiary-green-100: #e2eec5;
  --color-topiary-green-200: #cddca7;
  --color-topiary-green-300: #aec180;
  --color-topiary-green-400: #97a859;
  --color-topiary-green-500: #7e9030;
  --color-topiary-green-600: #6b7a2a;
  --color-topiary-green-700: #556222;
  --color-topiary-green-800: #404715;
  --color-topiary-green-900: #2c310d;
  --color-topiary-green-950: #191d02;
}

SCSS

$topiary-green: #6c7c26;
$topiary-green-rgb: 108, 124, 38;
$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);
}