#99A054

CSS

:root {
  --lazy-lizard: #99a054;
  --lazy-lizard-rgb: 153 160 84;
  --lazy-lizard-oklch: oklch(0.683 0.1 113.4);
}

.element {
  color: var(--lazy-lizard);
  background-color: hsl(66 31% 48%);
  border-color: oklch(0.683 0.1 113.4);
}

Tailwind CSS v4

@theme {
  --color-lazy-lizard: #99a054;
  --color-lazy-lizard-50: #f3f9d9;
  --color-lazy-lizard-100: #e6edc7;
  --color-lazy-lizard-200: #d2daa9;
  --color-lazy-lizard-300: #b5be83;
  --color-lazy-lizard-400: #9ea55d;
  --color-lazy-lizard-500: #868d37;
  --color-lazy-lizard-600: #727730;
  --color-lazy-lizard-700: #5b6026;
  --color-lazy-lizard-800: #444619;
  --color-lazy-lizard-900: #2f3010;
  --color-lazy-lizard-950: #1b1c03;
}

SCSS

$lazy-lizard: #99a054;
$lazy-lizard-rgb: 153, 160, 84;
$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);
}