Aragonite Blue

CSS

:root {
  --aragonite-blue: #6a95b1;
  --aragonite-blue-rgb: 106 149 177;
  --aragonite-blue-oklch: oklch(0.649 0.063 237.6);
}

.element {
  color: var(--aragonite-blue);
  background-color: hsl(204 31% 55%);
  border-color: oklch(0.649 0.063 237.6);
}

Tailwind CSS v4

@theme {
  --color-aragonite-blue: #6a95b1;
  --color-aragonite-blue-50: #e6f8ff;
  --color-aragonite-blue-100: #d6ebfb;
  --color-aragonite-blue-200: #bdd9ed;
  --color-aragonite-blue-300: #9bbcd5;
  --color-aragonite-blue-400: #7ba4c0;
  --color-aragonite-blue-500: #5d8dab;
  --color-aragonite-blue-600: #4f7791;
  --color-aragonite-blue-700: #3f5f74;
  --color-aragonite-blue-800: #2c4655;
  --color-aragonite-blue-900: #1e303c;
  --color-aragonite-blue-950: #0e1d25;
}

SCSS

$aragonite-blue: #6a95b1;
$aragonite-blue-rgb: 106, 149, 177;
$aragonite-blue-light: mix(#fff, $aragonite-blue, 20%);
$aragonite-blue-dark: mix(#000, $aragonite-blue, 20%);

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