#5D9233

CSS

:root {
  --bitter-leaf: #5d9233;
  --bitter-leaf-rgb: 93 146 51;
  --bitter-leaf-oklch: oklch(0.602 0.139 133.7);
}

.element {
  color: var(--bitter-leaf);
  background-color: hsl(93 48% 39%);
  border-color: oklch(0.602 0.139 133.7);
}

Tailwind CSS v4

@theme {
  --color-bitter-leaf: #5d9233;
  --color-bitter-leaf-50: #e4ffd8;
  --color-bitter-leaf-100: #d4f3c5;
  --color-bitter-leaf-200: #bae2a7;
  --color-bitter-leaf-300: #97c87f;
  --color-bitter-leaf-400: #7cb057;
  --color-bitter-leaf-500: #5e992c;
  --color-bitter-leaf-600: #508128;
  --color-bitter-leaf-700: #40681f;
  --color-bitter-leaf-800: #304c12;
  --color-bitter-leaf-900: #20350b;
  --color-bitter-leaf-950: #102001;
}

SCSS

$bitter-leaf: #5d9233;
$bitter-leaf-rgb: 93, 146, 51;
$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);
}