#99A051

CSS

:root {
  --lazy-lizard: #99a051;
  --lazy-lizard-rgb: 153 160 81;
  --lazy-lizard-oklch: oklch(0.683 0.103 113.3);
}

.element {
  color: var(--lazy-lizard);
  background-color: hsl(65 33% 47%);
  border-color: oklch(0.683 0.103 113.3);
}

Tailwind CSS v4

@theme {
  --color-lazy-lizard: #99a051;
  --color-lazy-lizard-50: #f3f9d8;
  --color-lazy-lizard-100: #e6edc6;
  --color-lazy-lizard-200: #d2daa8;
  --color-lazy-lizard-300: #b5be81;
  --color-lazy-lizard-400: #9ea55b;
  --color-lazy-lizard-500: #868d33;
  --color-lazy-lizard-600: #72772d;
  --color-lazy-lizard-700: #5b6023;
  --color-lazy-lizard-800: #444617;
  --color-lazy-lizard-900: #2f300e;
  --color-lazy-lizard-950: #1b1c02;
}

SCSS

$lazy-lizard: #99a051;
$lazy-lizard-rgb: 153, 160, 81;
$lazy-lizard-light: mix(#fff, $lazy-lizard, 20%);
$lazy-lizard-dark: mix(#000, $lazy-lizard, 20%);

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