#8198DE

CSS

:root {
  --wisteria-blue: #8198de;
  --wisteria-blue-rgb: 129 152 222;
  --wisteria-blue-oklch: oklch(0.69 0.107 269.6);
}

.element {
  color: var(--wisteria-blue);
  background-color: hsl(225 58% 69%);
  border-color: oklch(0.69 0.107 269.6);
}

Tailwind CSS v4

@theme {
  --color-wisteria-blue: #8198de;
  --color-wisteria-blue-50: #eaf4ff;
  --color-wisteria-blue-100: #dbe7ff;
  --color-wisteria-blue-200: #c4d2ff;
  --color-wisteria-blue-300: #a4b5ef;
  --color-wisteria-blue-400: #859bde;
  --color-wisteria-blue-500: #6a82cd;
  --color-wisteria-blue-600: #5a6ead;
  --color-wisteria-blue-700: #48588b;
  --color-wisteria-blue-800: #324167;
  --color-wisteria-blue-900: #222d49;
  --color-wisteria-blue-950: #111930;
}

SCSS

$wisteria-blue: #8198de;
$wisteria-blue-rgb: 129, 152, 222;
$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);
}