#7997F2

CSS

:root {
  --wisteria-blue: #7997f2;
  --wisteria-blue-rgb: 121 151 242;
  --wisteria-blue-oklch: oklch(0.693 0.138 268.8);
}

.element {
  color: var(--wisteria-blue);
  background-color: hsl(225 82% 71%);
  border-color: oklch(0.693 0.138 268.8);
}

Tailwind CSS v4

@theme {
  --color-wisteria-blue: #7997f2;
  --color-wisteria-blue-50: #e6f4ff;
  --color-wisteria-blue-100: #d6e6ff;
  --color-wisteria-blue-200: #bed2ff;
  --color-wisteria-blue-300: #9db4ff;
  --color-wisteria-blue-400: #7d9af0;
  --color-wisteria-blue-500: #617fe1;
  --color-wisteria-blue-600: #526cbe;
  --color-wisteria-blue-700: #415699;
  --color-wisteria-blue-800: #2c3f72;
  --color-wisteria-blue-900: #1e2c50;
  --color-wisteria-blue-950: #0e1836;
}

SCSS

$wisteria-blue: #7997f2;
$wisteria-blue-rgb: 121, 151, 242;
$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);
}