#8EA445

CSS

:root {
  --lime-it-or-leave-it: #8ea445;
  --lime-it-or-leave-it-rgb: 142 164 69;
  --lime-it-or-leave-it-oklch: oklch(0.682 0.124 120.7);
}

.element {
  color: var(--lime-it-or-leave-it);
  background-color: hsl(74 41% 46%);
  border-color: oklch(0.682 0.124 120.7);
}

Tailwind CSS v4

@theme {
  --color-lime-it-or-leave-it: #8ea445;
  --color-lime-it-or-leave-it-50: #eefcd5;
  --color-lime-it-or-leave-it-100: #e0efc2;
  --color-lime-it-or-leave-it-200: #cadda3;
  --color-lime-it-or-leave-it-300: #acc27a;
  --color-lime-it-or-leave-it-400: #94a951;
  --color-lime-it-or-leave-it-500: #7b9220;
  --color-lime-it-or-leave-it-600: #687b1e;
  --color-lime-it-or-leave-it-700: #536318;
  --color-lime-it-or-leave-it-800: #3e480d;
  --color-lime-it-or-leave-it-900: #2b3208;
  --color-lime-it-or-leave-it-950: #181e00;
}

SCSS

$lime-it-or-leave-it: #8ea445;
$lime-it-or-leave-it-rgb: 142, 164, 69;
$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);
}