I R Dark Green

CSS

:root {
  --i-r-dark-green: #404034;
  --i-r-dark-green-rgb: 64 64 52;
  --i-r-dark-green-oklch: oklch(0.368 0.02 107.3);
}

.element {
  color: var(--i-r-dark-green);
  background-color: hsl(60 10% 23%);
  border-color: oklch(0.368 0.02 107.3);
}

Tailwind CSS v4

@theme {
  --color-i-r-dark-green: #404034;
  --color-i-r-dark-green-50: #f5f6ef;
  --color-i-r-dark-green-100: #e8e8e1;
  --color-i-r-dark-green-200: #d4d5cc;
  --color-i-r-dark-green-300: #b8b8ad;
  --color-i-r-dark-green-400: #9f9f92;
  --color-i-r-dark-green-500: #878778;
  --color-i-r-dark-green-600: #727366;
  --color-i-r-dark-green-700: #5b5c51;
  --color-i-r-dark-green-800: #43433b;
  --color-i-r-dark-green-900: #2e2e29;
  --color-i-r-dark-green-950: #1b1b16;
}

SCSS

$i-r-dark-green: #404034;
$i-r-dark-green-rgb: 64, 64, 52;
$i-r-dark-green-light: mix(#fff, $i-r-dark-green, 20%);
$i-r-dark-green-dark: mix(#000, $i-r-dark-green, 20%);

.element {
  color: $i-r-dark-green;
  box-shadow: 0 0 0 2px rgba($i-r-dark-green, 0.35);
}