#849BC7

CSS

:root {
  --wisteria-blue: #849bc7;
  --wisteria-blue-rgb: 132 155 199;
  --wisteria-blue-oklch: oklch(0.688 0.07 263.1);
}

.element {
  color: var(--wisteria-blue);
  background-color: hsl(219 37% 65%);
  border-color: oklch(0.688 0.07 263.1);
}

Tailwind CSS v4

@theme {
  --color-wisteria-blue: #849bc7;
  --color-wisteria-blue-50: #ebf5ff;
  --color-wisteria-blue-100: #dde8ff;
  --color-wisteria-blue-200: #c6d4f3;
  --color-wisteria-blue-300: #a6b7dc;
  --color-wisteria-blue-400: #899fc9;
  --color-wisteria-blue-500: #6e86b5;
  --color-wisteria-blue-600: #5d7299;
  --color-wisteria-blue-700: #4a5b7b;
  --color-wisteria-blue-800: #35435b;
  --color-wisteria-blue-900: #242e40;
  --color-wisteria-blue-950: #131b29;
}

SCSS

$wisteria-blue: #849bc7;
$wisteria-blue-rgb: 132, 155, 199;
$wisteria-blue-light: mix(#fff, $wisteria-blue, 20%);
$wisteria-blue-dark: mix(#000, $wisteria-blue, 20%);

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