#83A641

CSS

:root {
  --lime-it-or-leave-it: #83a641;
  --lime-it-or-leave-it-rgb: 131 166 65;
  --lime-it-or-leave-it-oklch: oklch(0.678 0.135 125.9);
}

.element {
  color: var(--lime-it-or-leave-it);
  background-color: hsl(81 44% 45%);
  border-color: oklch(0.678 0.135 125.9);
}

Tailwind CSS v4

@theme {
  --color-lime-it-or-leave-it: #83a641;
  --color-lime-it-or-leave-it-50: #eafdd4;
  --color-lime-it-or-leave-it-100: #dbf1c1;
  --color-lime-it-or-leave-it-200: #c4e0a2;
  --color-lime-it-or-leave-it-300: #a3c579;
  --color-lime-it-or-leave-it-400: #8bac4e;
  --color-lime-it-or-leave-it-500: #70951a;
  --color-lime-it-or-leave-it-600: #5f7e1a;
  --color-lime-it-or-leave-it-700: #4c6515;
  --color-lime-it-or-leave-it-800: #394a09;
  --color-lime-it-or-leave-it-900: #273306;
  --color-lime-it-or-leave-it-950: #151f00;
}

SCSS

$lime-it-or-leave-it: #83a641;
$lime-it-or-leave-it-rgb: 131, 166, 65;
$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);
}