#7699EC

CSS

:root {
  --wisteria-blue: #7699ec;
  --wisteria-blue-rgb: 118 153 236;
  --wisteria-blue-oklch: oklch(0.692 0.129 265.8);
}

.element {
  color: var(--wisteria-blue);
  background-color: hsl(222 76% 69%);
  border-color: oklch(0.692 0.129 265.8);
}

Tailwind CSS v4

@theme {
  --color-wisteria-blue: #7699ec;
  --color-wisteria-blue-50: #e5f5ff;
  --color-wisteria-blue-100: #d5e7ff;
  --color-wisteria-blue-200: #bcd3ff;
  --color-wisteria-blue-300: #9bb5fa;
  --color-wisteria-blue-400: #7a9ceb;
  --color-wisteria-blue-500: #5d82db;
  --color-wisteria-blue-600: #4f6eb9;
  --color-wisteria-blue-700: #3f5894;
  --color-wisteria-blue-800: #2b416f;
  --color-wisteria-blue-900: #1d2d4e;
  --color-wisteria-blue-950: #0d1934;
}

SCSS

$wisteria-blue: #7699ec;
$wisteria-blue-rgb: 118, 153, 236;
$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);
}