#8BA445

CSS

:root {
  --lime-it-or-leave-it: #8ba445;
  --lime-it-or-leave-it-rgb: 139 164 69;
  --lime-it-or-leave-it-oklch: oklch(0.679 0.125 122.1);
}

.element {
  color: var(--lime-it-or-leave-it);
  background-color: hsl(76 41% 46%);
  border-color: oklch(0.679 0.125 122.1);
}

Tailwind CSS v4

@theme {
  --color-lime-it-or-leave-it: #8ba445;
  --color-lime-it-or-leave-it-50: #edfcd5;
  --color-lime-it-or-leave-it-100: #dff0c2;
  --color-lime-it-or-leave-it-200: #c9dea3;
  --color-lime-it-or-leave-it-300: #aac37a;
  --color-lime-it-or-leave-it-400: #92aa51;
  --color-lime-it-or-leave-it-500: #789221;
  --color-lime-it-or-leave-it-600: #667c1f;
  --color-lime-it-or-leave-it-700: #516319;
  --color-lime-it-or-leave-it-800: #3d480d;
  --color-lime-it-or-leave-it-900: #2a3208;
  --color-lime-it-or-leave-it-950: #181e00;
}

SCSS

$lime-it-or-leave-it: #8ba445;
$lime-it-or-leave-it-rgb: 139, 164, 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);
}