#84A647

CSS

:root {
  --lime-it-or-leave-it: #84a647;
  --lime-it-or-leave-it-rgb: 132 166 71;
  --lime-it-or-leave-it-oklch: oklch(0.679 0.129 126.1);
}

.element {
  color: var(--lime-it-or-leave-it);
  background-color: hsl(81 40% 46%);
  border-color: oklch(0.679 0.129 126.1);
}

Tailwind CSS v4

@theme {
  --color-lime-it-or-leave-it: #84a647;
  --color-lime-it-or-leave-it-50: #eafdd6;
  --color-lime-it-or-leave-it-100: #dbf1c3;
  --color-lime-it-or-leave-it-200: #c4dfa4;
  --color-lime-it-or-leave-it-300: #a4c47c;
  --color-lime-it-or-leave-it-400: #8bac53;
  --color-lime-it-or-leave-it-500: #719525;
  --color-lime-it-or-leave-it-600: #5f7e22;
  --color-lime-it-or-leave-it-700: #4c651b;
  --color-lime-it-or-leave-it-800: #39490f;
  --color-lime-it-or-leave-it-900: #273309;
  --color-lime-it-or-leave-it-950: #151f00;
}

SCSS

$lime-it-or-leave-it: #84a647;
$lime-it-or-leave-it-rgb: 132, 166, 71;
$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);
}