#87A548

CSS

:root {
  --lime-it-or-leave-it: #87a548;
  --lime-it-or-leave-it-rgb: 135 165 72;
  --lime-it-or-leave-it-oklch: oklch(0.679 0.125 124.6);
}

.element {
  color: var(--lime-it-or-leave-it);
  background-color: hsl(79 39% 46%);
  border-color: oklch(0.679 0.125 124.6);
}

Tailwind CSS v4

@theme {
  --color-lime-it-or-leave-it: #87a548;
  --color-lime-it-or-leave-it-50: #ecfcd6;
  --color-lime-it-or-leave-it-100: #ddf0c3;
  --color-lime-it-or-leave-it-200: #c6dfa4;
  --color-lime-it-or-leave-it-300: #a7c37c;
  --color-lime-it-or-leave-it-400: #8eab54;
  --color-lime-it-or-leave-it-500: #749426;
  --color-lime-it-or-leave-it-600: #627d23;
  --color-lime-it-or-leave-it-700: #4e641c;
  --color-lime-it-or-leave-it-800: #3b4910;
  --color-lime-it-or-leave-it-900: #28330a;
  --color-lime-it-or-leave-it-950: #161e00;
}

SCSS

$lime-it-or-leave-it: #87a548;
$lime-it-or-leave-it-rgb: 135, 165, 72;
$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);
}