#7E96EE

CSS

:root {
  --wisteria-blue: #7e96ee;
  --wisteria-blue-rgb: 126 150 238;
  --wisteria-blue-oklch: oklch(0.692 0.132 271.1);
}

.element {
  color: var(--wisteria-blue);
  background-color: hsl(227 77% 71%);
  border-color: oklch(0.692 0.132 271.1);
}

Tailwind CSS v4

@theme {
  --color-wisteria-blue: #7e96ee;
  --color-wisteria-blue-50: #e8f4ff;
  --color-wisteria-blue-100: #d9e6ff;
  --color-wisteria-blue-200: #c1d1ff;
  --color-wisteria-blue-300: #a1b3fc;
  --color-wisteria-blue-400: #8299ed;
  --color-wisteria-blue-500: #667edd;
  --color-wisteria-blue-600: #576bbb;
  --color-wisteria-blue-700: #455696;
  --color-wisteria-blue-800: #303f70;
  --color-wisteria-blue-900: #202b4f;
  --color-wisteria-blue-950: #101834;
}

SCSS

$wisteria-blue: #7e96ee;
$wisteria-blue-rgb: 126, 150, 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);
}