#F3ECE6

CSS

:root {
  --refer-to-the-stars: #f3ece6;
  --refer-to-the-stars-rgb: 243 236 230;
  --refer-to-the-stars-oklch: oklch(0.947 0.011 63.4);
}

.element {
  color: var(--refer-to-the-stars);
  background-color: hsl(28 35% 93%);
  border-color: oklch(0.947 0.011 63.4);
}

Tailwind CSS v4

@theme {
  --color-refer-to-the-stars: #f3ece6;
  --color-refer-to-the-stars-50: #f7f4f2;
  --color-refer-to-the-stars-100: #eae7e4;
  --color-refer-to-the-stars-200: #d8d3cf;
  --color-refer-to-the-stars-300: #bbb6b2;
  --color-refer-to-the-stars-400: #a39d98;
  --color-refer-to-the-stars-500: #8c857f;
  --color-refer-to-the-stars-600: #76706b;
  --color-refer-to-the-stars-700: #5f5a56;
  --color-refer-to-the-stars-800: #45423f;
  --color-refer-to-the-stars-900: #302d2b;
  --color-refer-to-the-stars-950: #1c1a18;
}

SCSS

$refer-to-the-stars: #f3ece6;
$refer-to-the-stars-rgb: 243, 236, 230;
$refer-to-the-stars-light: mix(#fff, $refer-to-the-stars, 20%);
$refer-to-the-stars-dark: mix(#000, $refer-to-the-stars, 20%);

.element {
  color: $refer-to-the-stars;
  box-shadow: 0 0 0 2px rgba($refer-to-the-stars, 0.35);
}