#7D97EC

CSS

:root {
  --wisteria-blue: #7d97ec;
  --wisteria-blue-rgb: 125 151 236;
  --wisteria-blue-oklch: oklch(0.693 0.129 269.9);
}

.element {
  color: var(--wisteria-blue);
  background-color: hsl(226 74% 71%);
  border-color: oklch(0.693 0.129 269.9);
}

Tailwind CSS v4

@theme {
  --color-wisteria-blue: #7d97ec;
  --color-wisteria-blue-50: #e8f4ff;
  --color-wisteria-blue-100: #d8e6ff;
  --color-wisteria-blue-200: #c1d2ff;
  --color-wisteria-blue-300: #a0b4fa;
  --color-wisteria-blue-400: #819aeb;
  --color-wisteria-blue-500: #657fdb;
  --color-wisteria-blue-600: #566cb9;
  --color-wisteria-blue-700: #445694;
  --color-wisteria-blue-800: #2f3f6f;
  --color-wisteria-blue-900: #202c4e;
  --color-wisteria-blue-950: #101934;
}

SCSS

$wisteria-blue: #7d97ec;
$wisteria-blue-rgb: 125, 151, 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);
}