#7F96ED

CSS

:root {
  --wisteria-blue: #7f96ed;
  --wisteria-blue-rgb: 127 150 237;
  --wisteria-blue-oklch: oklch(0.692 0.131 271.4);
}

.element {
  color: var(--wisteria-blue);
  background-color: hsl(227 75% 71%);
  border-color: oklch(0.692 0.131 271.4);
}

Tailwind CSS v4

@theme {
  --color-wisteria-blue: #7f96ed;
  --color-wisteria-blue-50: #e9f3ff;
  --color-wisteria-blue-100: #d9e6ff;
  --color-wisteria-blue-200: #c2d1ff;
  --color-wisteria-blue-300: #a2b3fb;
  --color-wisteria-blue-400: #8399ec;
  --color-wisteria-blue-500: #687edc;
  --color-wisteria-blue-600: #586bba;
  --color-wisteria-blue-700: #465695;
  --color-wisteria-blue-800: #303f6f;
  --color-wisteria-blue-900: #212b4e;
  --color-wisteria-blue-950: #101834;
}

SCSS

$wisteria-blue: #7f96ed;
$wisteria-blue-rgb: 127, 150, 237;
$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);
}