#84A553

CSS

:root {
  --lime-it-or-leave-it: #84a553;
  --lime-it-or-leave-it-rgb: 132 165 83;
  --lime-it-or-leave-it-oklch: oklch(0.678 0.116 127.3);
}

.element {
  color: var(--lime-it-or-leave-it);
  background-color: hsl(84 33% 49%);
  border-color: oklch(0.678 0.116 127.3);
}

Tailwind CSS v4

@theme {
  --color-lime-it-or-leave-it: #84a553;
  --color-lime-it-or-leave-it-50: #ebfcda;
  --color-lime-it-or-leave-it-100: #dcf0c7;
  --color-lime-it-or-leave-it-200: #c5dfaa;
  --color-lime-it-or-leave-it-300: #a5c384;
  --color-lime-it-or-leave-it-400: #8bab5e;
  --color-lime-it-or-leave-it-500: #719437;
  --color-lime-it-or-leave-it-600: #607d30;
  --color-lime-it-or-leave-it-700: #4c6426;
  --color-lime-it-or-leave-it-800: #394918;
  --color-lime-it-or-leave-it-900: #27330f;
  --color-lime-it-or-leave-it-950: #151e03;
}

SCSS

$lime-it-or-leave-it: #84a553;
$lime-it-or-leave-it-rgb: 132, 165, 83;
$lime-it-or-leave-it-light: mix(#fff, $lime-it-or-leave-it, 20%);
$lime-it-or-leave-it-dark: mix(#000, $lime-it-or-leave-it, 20%);

.element {
  color: $lime-it-or-leave-it;
  box-shadow: 0 0 0 2px rgba($lime-it-or-leave-it, 0.35);
}