#89A543

CSS

:root {
  --lime-it-or-leave-it: #89a543;
  --lime-it-or-leave-it-rgb: 137 165 67;
  --lime-it-or-leave-it-oklch: oklch(0.68 0.129 123.2);
}

.element {
  color: var(--lime-it-or-leave-it);
  background-color: hsl(77 42% 45%);
  border-color: oklch(0.68 0.129 123.2);
}

Tailwind CSS v4

@theme {
  --color-lime-it-or-leave-it: #89a543;
  --color-lime-it-or-leave-it-50: #ecfcd4;
  --color-lime-it-or-leave-it-100: #def0c1;
  --color-lime-it-or-leave-it-200: #c7dfa2;
  --color-lime-it-or-leave-it-300: #a8c379;
  --color-lime-it-or-leave-it-400: #90ab4f;
  --color-lime-it-or-leave-it-500: #76931d;
  --color-lime-it-or-leave-it-600: #647d1c;
  --color-lime-it-or-leave-it-700: #506417;
  --color-lime-it-or-leave-it-800: #3c490b;
  --color-lime-it-or-leave-it-900: #293207;
  --color-lime-it-or-leave-it-950: #171e00;
}

SCSS

$lime-it-or-leave-it: #89a543;
$lime-it-or-leave-it-rgb: 137, 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);
}