#89A450

CSS

:root {
  --lime-it-or-leave-it: #89a450;
  --lime-it-or-leave-it-rgb: 137 164 80;
  --lime-it-or-leave-it-oklch: oklch(0.679 0.115 124.1);
}

.element {
  color: var(--lime-it-or-leave-it);
  background-color: hsl(79 34% 48%);
  border-color: oklch(0.679 0.115 124.1);
}

Tailwind CSS v4

@theme {
  --color-lime-it-or-leave-it: #89a450;
  --color-lime-it-or-leave-it-50: #edfcd8;
  --color-lime-it-or-leave-it-100: #def0c6;
  --color-lime-it-or-leave-it-200: #c8dea8;
  --color-lime-it-or-leave-it-300: #a8c281;
  --color-lime-it-or-leave-it-400: #90aa5b;
  --color-lime-it-or-leave-it-500: #769333;
  --color-lime-it-or-leave-it-600: #647c2c;
  --color-lime-it-or-leave-it-700: #506323;
  --color-lime-it-or-leave-it-800: #3c4816;
  --color-lime-it-or-leave-it-900: #29320e;
  --color-lime-it-or-leave-it-950: #171e02;
}

SCSS

$lime-it-or-leave-it: #89a450;
$lime-it-or-leave-it-rgb: 137, 164, 80;
$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);
}