#7398F3

CSS

:root {
  --wisteria-blue: #7398f3;
  --wisteria-blue-rgb: 115 152 243;
  --wisteria-blue-oklch: oklch(0.692 0.141 266.1);
}

.element {
  color: var(--wisteria-blue);
  background-color: hsl(223 84% 70%);
  border-color: oklch(0.692 0.141 266.1);
}

Tailwind CSS v4

@theme {
  --color-wisteria-blue: #7398f3;
  --color-wisteria-blue-50: #e4f5ff;
  --color-wisteria-blue-100: #d4e7ff;
  --color-wisteria-blue-200: #bad3ff;
  --color-wisteria-blue-300: #99b5ff;
  --color-wisteria-blue-400: #779bf1;
  --color-wisteria-blue-500: #5a80e3;
  --color-wisteria-blue-600: #4d6dbf;
  --color-wisteria-blue-700: #3d579a;
  --color-wisteria-blue-800: #294073;
  --color-wisteria-blue-900: #1b2c51;
  --color-wisteria-blue-950: #0c1936;
}

SCSS

$wisteria-blue: #7398f3;
$wisteria-blue-rgb: 115, 152, 243;
$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);
}