#809AD8

CSS

:root {
  --wisteria-blue: #809ad8;
  --wisteria-blue-rgb: 128 154 216;
  --wisteria-blue-oklch: oklch(0.691 0.096 266.5);
}

.element {
  color: var(--wisteria-blue);
  background-color: hsl(222 53% 67%);
  border-color: oklch(0.691 0.096 266.5);
}

Tailwind CSS v4

@theme {
  --color-wisteria-blue: #809ad8;
  --color-wisteria-blue-50: #e9f5ff;
  --color-wisteria-blue-100: #dae7ff;
  --color-wisteria-blue-200: #c3d3ff;
  --color-wisteria-blue-300: #a3b6ea;
  --color-wisteria-blue-400: #849dd8;
  --color-wisteria-blue-500: #6984c6;
  --color-wisteria-blue-600: #5970a7;
  --color-wisteria-blue-700: #475986;
  --color-wisteria-blue-800: #314264;
  --color-wisteria-blue-900: #222d46;
  --color-wisteria-blue-950: #111a2e;
}

SCSS

$wisteria-blue: #809ad8;
$wisteria-blue-rgb: 128, 154, 216;
$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);
}