Bijou Blue

CSS

:root {
  --bijou-blue: #4e5e7f;
  --bijou-blue-rgb: 78 94 127;
  --bijou-blue-oklch: oklch(0.482 0.057 264.3);
}

.element {
  color: var(--bijou-blue);
  background-color: hsl(220 24% 40%);
  border-color: oklch(0.482 0.057 264.3);
}

Tailwind CSS v4

@theme {
  --color-bijou-blue: #4e5e7f;
  --color-bijou-blue-50: #eef5ff;
  --color-bijou-blue-100: #dfe8fc;
  --color-bijou-blue-200: #c9d4ee;
  --color-bijou-blue-300: #aab7d6;
  --color-bijou-blue-400: #8e9fc1;
  --color-bijou-blue-500: #7386ad;
  --color-bijou-blue-600: #627292;
  --color-bijou-blue-700: #4e5b75;
  --color-bijou-blue-800: #384356;
  --color-bijou-blue-900: #262e3c;
  --color-bijou-blue-950: #141b26;
}

SCSS

$bijou-blue: #4e5e7f;
$bijou-blue-rgb: 78, 94, 127;
$bijou-blue-light: mix(#fff, $bijou-blue, 20%);
$bijou-blue-dark: mix(#000, $bijou-blue, 20%);

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