Pastel Blue

CSS

:root {
  --pastel-blue: #a2bffe;
  --pastel-blue-rgb: 162 191 254;
  --pastel-blue-oklch: oklch(0.806 0.095 265.2);
}

.element {
  color: var(--pastel-blue);
  background-color: hsl(221 98% 82%);
  border-color: oklch(0.806 0.095 265.2);
}

Tailwind CSS v4

@theme {
  --color-pastel-blue: #a2bffe;
  --color-pastel-blue-50: #e9f5ff;
  --color-pastel-blue-100: #dae8ff;
  --color-pastel-blue-200: #c2d4fe;
  --color-pastel-blue-300: #a2b7e9;
  --color-pastel-blue-400: #839ed7;
  --color-pastel-blue-500: #6784c6;
  --color-pastel-blue-600: #5870a7;
  --color-pastel-blue-700: #465a86;
  --color-pastel-blue-800: #314263;
  --color-pastel-blue-900: #212d46;
  --color-pastel-blue-950: #111a2d;
}

SCSS

$pastel-blue: #a2bffe;
$pastel-blue-rgb: 162, 191, 254;
$pastel-blue-light: mix(#fff, $pastel-blue, 20%);
$pastel-blue-dark: mix(#000, $pastel-blue, 20%);

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