Heavenly Blue

CSS

:root {
  --heavenly-blue: #a3bbcd;
  --heavenly-blue-rgb: 163 187 205;
  --heavenly-blue-oklch: oklch(0.78 0.037 240.4);
}

.element {
  color: var(--heavenly-blue);
  background-color: hsl(206 30% 72%);
  border-color: oklch(0.78 0.037 240.4);
}

Tailwind CSS v4

@theme {
  --color-heavenly-blue: #a3bbcd;
  --color-heavenly-blue-50: #ecf7ff;
  --color-heavenly-blue-100: #deeaf3;
  --color-heavenly-blue-200: #c7d7e3;
  --color-heavenly-blue-300: #a8bac9;
  --color-heavenly-blue-400: #8ca2b2;
  --color-heavenly-blue-500: #718a9d;
  --color-heavenly-blue-600: #607584;
  --color-heavenly-blue-700: #4c5d6a;
  --color-heavenly-blue-800: #37444e;
  --color-heavenly-blue-900: #252f36;
  --color-heavenly-blue-950: #141c21;
}

SCSS

$heavenly-blue: #a3bbcd;
$heavenly-blue-rgb: 163, 187, 205;
$heavenly-blue-light: mix(#fff, $heavenly-blue, 20%);
$heavenly-blue-dark: mix(#000, $heavenly-blue, 20%);

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