#F1FBE5

CSS

:root {
  --milk-foam: #f1fbe5;
  --milk-foam-rgb: 241 251 229;
  --milk-foam-oklch: oklch(0.975 0.031 127);
}

.element {
  color: var(--milk-foam);
  background-color: hsl(87 73% 94%);
  border-color: oklch(0.975 0.031 127);
}

Tailwind CSS v4

@theme {
  --color-milk-foam: #f1fbe5;
  --color-milk-foam-50: #f2f7ee;
  --color-milk-foam-100: #e5eadf;
  --color-milk-foam-200: #d0d7c9;
  --color-milk-foam-300: #b2bbaa;
  --color-milk-foam-400: #99a28f;
  --color-milk-foam-500: #818a75;
  --color-milk-foam-600: #6d7563;
  --color-milk-foam-700: #575e4f;
  --color-milk-foam-800: #404439;
  --color-milk-foam-900: #2c2f27;
  --color-milk-foam-950: #191c15;
}

SCSS

$milk-foam: #f1fbe5;
$milk-foam-rgb: 241, 251, 229;
$milk-foam-light: mix(#fff, $milk-foam, 20%);
$milk-foam-dark: mix(#000, $milk-foam, 20%);

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