#5D9635

CSS

:root {
  --bitter-leaf: #5d9635;
  --bitter-leaf-rgb: 93 150 53;
  --bitter-leaf-oklch: oklch(0.613 0.143 134.6);
}

.element {
  color: var(--bitter-leaf);
  background-color: hsl(95 48% 40%);
  border-color: oklch(0.613 0.143 134.6);
}

Tailwind CSS v4

@theme {
  --color-bitter-leaf: #5d9635;
  --color-bitter-leaf-50: #e3ffd7;
  --color-bitter-leaf-100: #d2f4c5;
  --color-bitter-leaf-200: #b8e3a6;
  --color-bitter-leaf-300: #95c87f;
  --color-bitter-leaf-400: #79b156;
  --color-bitter-leaf-500: #5a9a2a;
  --color-bitter-leaf-600: #4d8226;
  --color-bitter-leaf-700: #3d681e;
  --color-bitter-leaf-800: #2e4c11;
  --color-bitter-leaf-900: #1f350a;
  --color-bitter-leaf-950: #0f2000;
}

SCSS

$bitter-leaf: #5d9635;
$bitter-leaf-rgb: 93, 150, 53;
$bitter-leaf-light: mix(#fff, $bitter-leaf, 20%);
$bitter-leaf-dark: mix(#000, $bitter-leaf, 20%);

.element {
  color: $bitter-leaf;
  box-shadow: 0 0 0 2px rgba($bitter-leaf, 0.35);
}