#809AD7

CSS

:root {
  --wisteria-blue: #809ad7;
  --wisteria-blue-rgb: 128 154 215;
  --wisteria-blue-oklch: oklch(0.69 0.095 266.2);
}

.element {
  color: var(--wisteria-blue);
  background-color: hsl(222 52% 67%);
  border-color: oklch(0.69 0.095 266.2);
}

Tailwind CSS v4

@theme {
  --color-wisteria-blue: #809ad7;
  --color-wisteria-blue-50: #e9f5ff;
  --color-wisteria-blue-100: #dae8ff;
  --color-wisteria-blue-200: #c3d4fe;
  --color-wisteria-blue-300: #a3b6e9;
  --color-wisteria-blue-400: #849dd7;
  --color-wisteria-blue-500: #6984c5;
  --color-wisteria-blue-600: #5970a7;
  --color-wisteria-blue-700: #475986;
  --color-wisteria-blue-800: #324263;
  --color-wisteria-blue-900: #222d46;
  --color-wisteria-blue-950: #111a2d;
}

SCSS

$wisteria-blue: #809ad7;
$wisteria-blue-rgb: 128, 154, 215;
$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);
}