#7598EE

CSS

:root {
  --wisteria-blue: #7598ee;
  --wisteria-blue-rgb: 117 152 238;
  --wisteria-blue-oklch: oklch(0.691 0.133 266.2);
}

.element {
  color: var(--wisteria-blue);
  background-color: hsl(223 78% 70%);
  border-color: oklch(0.691 0.133 266.2);
}

Tailwind CSS v4

@theme {
  --color-wisteria-blue: #7598ee;
  --color-wisteria-blue-50: #e5f5ff;
  --color-wisteria-blue-100: #d5e7ff;
  --color-wisteria-blue-200: #bcd3ff;
  --color-wisteria-blue-300: #9ab5fc;
  --color-wisteria-blue-400: #7a9bed;
  --color-wisteria-blue-500: #5d81de;
  --color-wisteria-blue-600: #4f6dbb;
  --color-wisteria-blue-700: #3f5796;
  --color-wisteria-blue-800: #2b4070;
  --color-wisteria-blue-900: #1d2c4f;
  --color-wisteria-blue-950: #0d1935;
}

SCSS

$wisteria-blue: #7598ee;
$wisteria-blue-rgb: 117, 152, 238;
$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);
}