#8CA444

CSS

:root {
  --lime-it-or-leave-it: #8ca444;
  --lime-it-or-leave-it-rgb: 140 164 68;
  --lime-it-or-leave-it-oklch: oklch(0.68 0.126 121.6);
}

.element {
  color: var(--lime-it-or-leave-it);
  background-color: hsl(75 41% 45%);
  border-color: oklch(0.68 0.126 121.6);
}

Tailwind CSS v4

@theme {
  --color-lime-it-or-leave-it: #8ca444;
  --color-lime-it-or-leave-it-50: #eefcd5;
  --color-lime-it-or-leave-it-100: #dff0c2;
  --color-lime-it-or-leave-it-200: #c9dea2;
  --color-lime-it-or-leave-it-300: #aac27a;
  --color-lime-it-or-leave-it-400: #93aa50;
  --color-lime-it-or-leave-it-500: #79921f;
  --color-lime-it-or-leave-it-600: #677c1d;
  --color-lime-it-or-leave-it-700: #526318;
  --color-lime-it-or-leave-it-800: #3d480c;
  --color-lime-it-or-leave-it-900: #2a3208;
  --color-lime-it-or-leave-it-950: #181e00;
}

SCSS

$lime-it-or-leave-it: #8ca444;
$lime-it-or-leave-it-rgb: 140, 164, 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);
}