#8396EA

CSS

:root {
  --wisteria-blue: #8396ea;
  --wisteria-blue-rgb: 131 150 234;
  --wisteria-blue-oklch: oklch(0.693 0.125 273.1);
}

.element {
  color: var(--wisteria-blue);
  background-color: hsl(229 71% 72%);
  border-color: oklch(0.693 0.125 273.1);
}

Tailwind CSS v4

@theme {
  --color-wisteria-blue: #8396ea;
  --color-wisteria-blue-50: #eaf3ff;
  --color-wisteria-blue-100: #dbe5ff;
  --color-wisteria-blue-200: #c4d1ff;
  --color-wisteria-blue-300: #a4b2f8;
  --color-wisteria-blue-400: #8699e8;
  --color-wisteria-blue-500: #6c7ed9;
  --color-wisteria-blue-600: #5b6bb7;
  --color-wisteria-blue-700: #495593;
  --color-wisteria-blue-800: #333f6e;
  --color-wisteria-blue-900: #222b4d;
  --color-wisteria-blue-950: #121833;
}

SCSS

$wisteria-blue: #8396ea;
$wisteria-blue-rgb: 131, 150, 234;
$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);
}