#2E3927

CSS

:root {
  --palm-leaf: #2e3927;
  --palm-leaf-rgb: 46 57 39;
  --palm-leaf-oklch: oklch(0.329 0.034 133.6);
}

.element {
  color: var(--palm-leaf);
  background-color: hsl(97 19% 19%);
  border-color: oklch(0.329 0.034 133.6);
}

Tailwind CSS v4

@theme {
  --color-palm-leaf: #2e3927;
  --color-palm-leaf-50: #f1f7ee;
  --color-palm-leaf-100: #e3ebdf;
  --color-palm-leaf-200: #ced8c9;
  --color-palm-leaf-300: #b0bcaa;
  --color-palm-leaf-400: #96a38f;
  --color-palm-leaf-500: #7d8b75;
  --color-palm-leaf-600: #6a7663;
  --color-palm-leaf-700: #555e4f;
  --color-palm-leaf-800: #3e4539;
  --color-palm-leaf-900: #2b3027;
  --color-palm-leaf-950: #181c15;
}

SCSS

$palm-leaf: #2e3927;
$palm-leaf-rgb: 46, 57, 39;
$palm-leaf-light: mix(#fff, $palm-leaf, 20%);
$palm-leaf-dark: mix(#000, $palm-leaf, 20%);

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