#84A650

CSS

:root {
  --lime-it-or-leave-it: #84a650;
  --lime-it-or-leave-it-rgb: 132 166 80;
  --lime-it-or-leave-it-oklch: oklch(0.68 0.12 127.2);
}

.element {
  color: var(--lime-it-or-leave-it);
  background-color: hsl(84 35% 48%);
  border-color: oklch(0.68 0.12 127.2);
}

Tailwind CSS v4

@theme {
  --color-lime-it-or-leave-it: #84a650;
  --color-lime-it-or-leave-it-50: #eafdd8;
  --color-lime-it-or-leave-it-100: #dbf0c6;
  --color-lime-it-or-leave-it-200: #c4dfa8;
  --color-lime-it-or-leave-it-300: #a4c481;
  --color-lime-it-or-leave-it-400: #8bac5b;
  --color-lime-it-or-leave-it-500: #709432;
  --color-lime-it-or-leave-it-600: #5f7d2c;
  --color-lime-it-or-leave-it-700: #4c6423;
  --color-lime-it-or-leave-it-800: #394915;
  --color-lime-it-or-leave-it-900: #27330e;
  --color-lime-it-or-leave-it-950: #151e02;
}

SCSS

$lime-it-or-leave-it: #84a650;
$lime-it-or-leave-it-rgb: 132, 166, 80;
$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);
}