#8199D8

CSS

:root {
  --wisteria-blue: #8199d8;
  --wisteria-blue-rgb: 129 153 216;
  --wisteria-blue-oklch: oklch(0.689 0.097 267.8);
}

.element {
  color: var(--wisteria-blue);
  background-color: hsl(223 53% 68%);
  border-color: oklch(0.689 0.097 267.8);
}

Tailwind CSS v4

@theme {
  --color-wisteria-blue: #8199d8;
  --color-wisteria-blue-50: #eaf5ff;
  --color-wisteria-blue-100: #dbe7ff;
  --color-wisteria-blue-200: #c4d3ff;
  --color-wisteria-blue-300: #a4b6ea;
  --color-wisteria-blue-400: #859dd9;
  --color-wisteria-blue-500: #6a83c7;
  --color-wisteria-blue-600: #5a6fa8;
  --color-wisteria-blue-700: #485987;
  --color-wisteria-blue-800: #324164;
  --color-wisteria-blue-900: #222d46;
  --color-wisteria-blue-950: #111a2e;
}

SCSS

$wisteria-blue: #8199d8;
$wisteria-blue-rgb: 129, 153, 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);
}