#7997F3

CSS

:root {
  --wisteria-blue: #7997f3;
  --wisteria-blue-rgb: 121 151 243;
  --wisteria-blue-oklch: oklch(0.694 0.14 268.9);
}

.element {
  color: var(--wisteria-blue);
  background-color: hsl(225 84% 71%);
  border-color: oklch(0.694 0.14 268.9);
}

Tailwind CSS v4

@theme {
  --color-wisteria-blue: #7997f3;
  --color-wisteria-blue-50: #e6f4ff;
  --color-wisteria-blue-100: #d6e6ff;
  --color-wisteria-blue-200: #bed2ff;
  --color-wisteria-blue-300: #9db3ff;
  --color-wisteria-blue-400: #7d9af1;
  --color-wisteria-blue-500: #607fe2;
  --color-wisteria-blue-600: #526bbf;
  --color-wisteria-blue-700: #415699;
  --color-wisteria-blue-800: #2c3f72;
  --color-wisteria-blue-900: #1e2c51;
  --color-wisteria-blue-950: #0e1836;
}

SCSS

$wisteria-blue: #7997f3;
$wisteria-blue-rgb: 121, 151, 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);
}