#8BA440

CSS

:root {
  --lime-it-or-leave-it: #8ba440;
  --lime-it-or-leave-it-rgb: 139 164 64;
  --lime-it-or-leave-it-oklch: oklch(0.679 0.13 121.8);
}

.element {
  color: var(--lime-it-or-leave-it);
  background-color: hsl(75 44% 45%);
  border-color: oklch(0.679 0.13 121.8);
}

Tailwind CSS v4

@theme {
  --color-lime-it-or-leave-it: #8ba440;
  --color-lime-it-or-leave-it-50: #edfcd4;
  --color-lime-it-or-leave-it-100: #dff0c1;
  --color-lime-it-or-leave-it-200: #c9dea1;
  --color-lime-it-or-leave-it-300: #aac377;
  --color-lime-it-or-leave-it-400: #92aa4d;
  --color-lime-it-or-leave-it-500: #799317;
  --color-lime-it-or-leave-it-600: #667c18;
  --color-lime-it-or-leave-it-700: #526314;
  --color-lime-it-or-leave-it-800: #3d4809;
  --color-lime-it-or-leave-it-900: #2a3206;
  --color-lime-it-or-leave-it-950: #181e00;
}

SCSS

$lime-it-or-leave-it: #8ba440;
$lime-it-or-leave-it-rgb: 139, 164, 64;
$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);
}