#7FA745

CSS

:root {
  --lime-it-or-leave-it: #7fa745;
  --lime-it-or-leave-it-rgb: 127 167 69;
  --lime-it-or-leave-it-oklch: oklch(0.678 0.135 128.2);
}

.element {
  color: var(--lime-it-or-leave-it);
  background-color: hsl(84 42% 46%);
  border-color: oklch(0.678 0.135 128.2);
}

Tailwind CSS v4

@theme {
  --color-lime-it-or-leave-it: #7fa745;
  --color-lime-it-or-leave-it-50: #e8fed5;
  --color-lime-it-or-leave-it-100: #d9f2c3;
  --color-lime-it-or-leave-it-200: #c1e0a4;
  --color-lime-it-or-leave-it-300: #a0c67b;
  --color-lime-it-or-leave-it-400: #87ad52;
  --color-lime-it-or-leave-it-500: #6b9622;
  --color-lime-it-or-leave-it-600: #5b7f20;
  --color-lime-it-or-leave-it-700: #496619;
  --color-lime-it-or-leave-it-800: #374a0d;
  --color-lime-it-or-leave-it-900: #253408;
  --color-lime-it-or-leave-it-950: #141f00;
}

SCSS

$lime-it-or-leave-it: #7fa745;
$lime-it-or-leave-it-rgb: 127, 167, 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);
}