Blue Dahlia

CSS

:root {
  --blue-dahlia: #415e9c;
  --blue-dahlia-rgb: 65 94 156;
  --blue-dahlia-oklch: oklch(0.49 0.106 264);
}

.element {
  color: var(--blue-dahlia);
  background-color: hsl(221 41% 43%);
  border-color: oklch(0.49 0.106 264);
}

Tailwind CSS v4

@theme {
  --color-blue-dahlia: #415e9c;
  --color-blue-dahlia-50: #e7f5ff;
  --color-blue-dahlia-100: #d7e8ff;
  --color-blue-dahlia-200: #bfd4ff;
  --color-blue-dahlia-300: #9eb7ee;
  --color-blue-dahlia-400: #7e9edd;
  --color-blue-dahlia-500: #6284cc;
  --color-blue-dahlia-600: #5370ac;
  --color-blue-dahlia-700: #425a8a;
  --color-blue-dahlia-800: #2e4267;
  --color-blue-dahlia-900: #1f2d48;
  --color-blue-dahlia-950: #0f1a2f;
}

SCSS

$blue-dahlia: #415e9c;
$blue-dahlia-rgb: 65, 94, 156;
$blue-dahlia-light: mix(#fff, $blue-dahlia, 20%);
$blue-dahlia-dark: mix(#000, $blue-dahlia, 20%);

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