#707B13

CSS

:root {
  --topiary-green: #707b13;
  --topiary-green-rgb: 112 123 19;
  --topiary-green-oklch: oklch(0.555 0.12 116);
}

.element {
  color: var(--topiary-green);
  background-color: hsl(66 73% 28%);
  border-color: oklch(0.555 0.12 116);
}

Tailwind CSS v4

@theme {
  --color-topiary-green: #707b13;
  --color-topiary-green-50: #f2fad4;
  --color-topiary-green-100: #e4eec1;
  --color-topiary-green-200: #cfdca1;
  --color-topiary-green-300: #b2c078;
  --color-topiary-green-400: #9ba74f;
  --color-topiary-green-500: #838f1c;
  --color-topiary-green-600: #6f791b;
  --color-topiary-green-700: #586116;
  --color-topiary-green-800: #42470b;
  --color-topiary-green-900: #2e3107;
  --color-topiary-green-950: #1a1d00;
}

SCSS

$topiary-green: #707b13;
$topiary-green-rgb: 112, 123, 19;
$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);
}