Sea of Stars

CSS

:root {
  --sea-of-stars: #0b334d;
  --sea-of-stars-rgb: 11 51 77;
  --sea-of-stars-oklch: oklch(0.308 0.064 242.1);
}

.element {
  color: var(--sea-of-stars);
  background-color: hsl(204 75% 17%);
  border-color: oklch(0.308 0.064 242.1);
}

Tailwind CSS v4

@theme {
  --color-sea-of-stars: #0b334d;
  --color-sea-of-stars-50: #e7f8ff;
  --color-sea-of-stars-100: #d7ebfc;
  --color-sea-of-stars-200: #bed8ee;
  --color-sea-of-stars-300: #9cbcd6;
  --color-sea-of-stars-400: #7da4c1;
  --color-sea-of-stars-500: #608cad;
  --color-sea-of-stars-600: #517692;
  --color-sea-of-stars-700: #415f75;
  --color-sea-of-stars-800: #2e4556;
  --color-sea-of-stars-900: #1f303c;
  --color-sea-of-stars-950: #0e1c26;
}

SCSS

$sea-of-stars: #0b334d;
$sea-of-stars-rgb: 11, 51, 77;
$sea-of-stars-light: mix(#fff, $sea-of-stars, 20%);
$sea-of-stars-dark: mix(#000, $sea-of-stars, 20%);

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