#87A543

CSS

:root {
  --lime-it-or-leave-it: #87a543;
  --lime-it-or-leave-it-rgb: 135 165 67;
  --lime-it-or-leave-it-oklch: oklch(0.678 0.13 124.1);
}

.element {
  color: var(--lime-it-or-leave-it);
  background-color: hsl(78 42% 45%);
  border-color: oklch(0.678 0.13 124.1);
}

Tailwind CSS v4

@theme {
  --color-lime-it-or-leave-it: #87a543;
  --color-lime-it-or-leave-it-50: #ecfdd5;
  --color-lime-it-or-leave-it-100: #ddf0c2;
  --color-lime-it-or-leave-it-200: #c6dfa2;
  --color-lime-it-or-leave-it-300: #a7c479;
  --color-lime-it-or-leave-it-400: #8eab50;
  --color-lime-it-or-leave-it-500: #74941e;
  --color-lime-it-or-leave-it-600: #627d1d;
  --color-lime-it-or-leave-it-700: #4f6417;
  --color-lime-it-or-leave-it-800: #3b490b;
  --color-lime-it-or-leave-it-900: #283307;
  --color-lime-it-or-leave-it-950: #161e00;
}

SCSS

$lime-it-or-leave-it: #87a543;
$lime-it-or-leave-it-rgb: 135, 165, 67;
$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);
}