#84A644

CSS

:root {
  --lime-it-or-leave-it: #84a644;
  --lime-it-or-leave-it-rgb: 132 166 68;
  --lime-it-or-leave-it-oklch: oklch(0.679 0.132 125.8);
}

.element {
  color: var(--lime-it-or-leave-it);
  background-color: hsl(81 42% 46%);
  border-color: oklch(0.679 0.132 125.8);
}

Tailwind CSS v4

@theme {
  --color-lime-it-or-leave-it: #84a644;
  --color-lime-it-or-leave-it-50: #eafdd5;
  --color-lime-it-or-leave-it-100: #dbf1c2;
  --color-lime-it-or-leave-it-200: #c4e0a3;
  --color-lime-it-or-leave-it-300: #a4c47a;
  --color-lime-it-or-leave-it-400: #8bac50;
  --color-lime-it-or-leave-it-500: #71951f;
  --color-lime-it-or-leave-it-600: #607e1e;
  --color-lime-it-or-leave-it-700: #4c6518;
  --color-lime-it-or-leave-it-800: #394a0c;
  --color-lime-it-or-leave-it-900: #273308;
  --color-lime-it-or-leave-it-950: #151f00;
}

SCSS

$lime-it-or-leave-it: #84a644;
$lime-it-or-leave-it-rgb: 132, 166, 68;
$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);
}