#86A545

CSS

:root {
  --lime-it-or-leave-it: #86a545;
  --lime-it-or-leave-it-rgb: 134 165 69;
  --lime-it-or-leave-it-oklch: oklch(0.678 0.129 124.7);
}

.element {
  color: var(--lime-it-or-leave-it);
  background-color: hsl(79 41% 46%);
  border-color: oklch(0.678 0.129 124.7);
}

Tailwind CSS v4

@theme {
  --color-lime-it-or-leave-it: #86a545;
  --color-lime-it-or-leave-it-50: #ebfdd5;
  --color-lime-it-or-leave-it-100: #dcf0c2;
  --color-lime-it-or-leave-it-200: #c6dfa3;
  --color-lime-it-or-leave-it-300: #a6c47b;
  --color-lime-it-or-leave-it-400: #8dab52;
  --color-lime-it-or-leave-it-500: #739422;
  --color-lime-it-or-leave-it-600: #627d20;
  --color-lime-it-or-leave-it-700: #4e6419;
  --color-lime-it-or-leave-it-800: #3a490d;
  --color-lime-it-or-leave-it-900: #283308;
  --color-lime-it-or-leave-it-950: #161e00;
}

SCSS

$lime-it-or-leave-it: #86a545;
$lime-it-or-leave-it-rgb: 134, 165, 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);
}