#849BC6

CSS

:root {
  --wisteria-blue: #849bc6;
  --wisteria-blue-rgb: 132 155 198;
  --wisteria-blue-oklch: oklch(0.688 0.069 262.7);
}

.element {
  color: var(--wisteria-blue);
  background-color: hsl(219 37% 65%);
  border-color: oklch(0.688 0.069 262.7);
}

Tailwind CSS v4

@theme {
  --color-wisteria-blue: #849bc6;
  --color-wisteria-blue-50: #ebf5ff;
  --color-wisteria-blue-100: #dde8ff;
  --color-wisteria-blue-200: #c6d5f3;
  --color-wisteria-blue-300: #a6b8dc;
  --color-wisteria-blue-400: #899fc8;
  --color-wisteria-blue-500: #6e86b4;
  --color-wisteria-blue-600: #5d7298;
  --color-wisteria-blue-700: #4a5b7a;
  --color-wisteria-blue-800: #35435a;
  --color-wisteria-blue-900: #242e3f;
  --color-wisteria-blue-950: #131b28;
}

SCSS

$wisteria-blue: #849bc6;
$wisteria-blue-rgb: 132, 155, 198;
$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);
}