#7598F2

CSS

:root {
  --wisteria-blue: #7598f2;
  --wisteria-blue-rgb: 117 152 242;
  --wisteria-blue-oklch: oklch(0.693 0.139 266.7);
}

.element {
  color: var(--wisteria-blue);
  background-color: hsl(223 83% 70%);
  border-color: oklch(0.693 0.139 266.7);
}

Tailwind CSS v4

@theme {
  --color-wisteria-blue: #7598f2;
  --color-wisteria-blue-50: #e5f5ff;
  --color-wisteria-blue-100: #d5e7ff;
  --color-wisteria-blue-200: #bcd3ff;
  --color-wisteria-blue-300: #9ab4ff;
  --color-wisteria-blue-400: #799bf0;
  --color-wisteria-blue-500: #5c80e1;
  --color-wisteria-blue-600: #4e6dbe;
  --color-wisteria-blue-700: #3e5799;
  --color-wisteria-blue-800: #2a4072;
  --color-wisteria-blue-900: #1c2c50;
  --color-wisteria-blue-950: #0d1936;
}

SCSS

$wisteria-blue: #7598f2;
$wisteria-blue-rgb: 117, 152, 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);
}