#8299D7

CSS

:root {
  --wisteria-blue: #8299d7;
  --wisteria-blue-rgb: 130 153 215;
  --wisteria-blue-oklch: oklch(0.69 0.095 268.2);
}

.element {
  color: var(--wisteria-blue);
  background-color: hsl(224 52% 68%);
  border-color: oklch(0.69 0.095 268.2);
}

Tailwind CSS v4

@theme {
  --color-wisteria-blue: #8299d7;
  --color-wisteria-blue-50: #eaf5ff;
  --color-wisteria-blue-100: #dbe7ff;
  --color-wisteria-blue-200: #c4d3fe;
  --color-wisteria-blue-300: #a4b6e9;
  --color-wisteria-blue-400: #869cd8;
  --color-wisteria-blue-500: #6b83c6;
  --color-wisteria-blue-600: #5b6fa7;
  --color-wisteria-blue-700: #485986;
  --color-wisteria-blue-800: #334164;
  --color-wisteria-blue-900: #232d46;
  --color-wisteria-blue-950: #121a2d;
}

SCSS

$wisteria-blue: #8299d7;
$wisteria-blue-rgb: 130, 153, 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);
}