#7C9ADA

CSS

:root {
  --wisteria-blue: #7c9ada;
  --wisteria-blue-rgb: 124 154 218;
  --wisteria-blue-oklch: oklch(0.689 0.101 264.6);
}

.element {
  color: var(--wisteria-blue);
  background-color: hsl(221 56% 67%);
  border-color: oklch(0.689 0.101 264.6);
}

Tailwind CSS v4

@theme {
  --color-wisteria-blue: #7c9ada;
  --color-wisteria-blue-50: #e8f5ff;
  --color-wisteria-blue-100: #d9e8ff;
  --color-wisteria-blue-200: #c1d4ff;
  --color-wisteria-blue-300: #a0b7ec;
  --color-wisteria-blue-400: #819edb;
  --color-wisteria-blue-500: #6584c9;
  --color-wisteria-blue-600: #5570aa;
  --color-wisteria-blue-700: #445a88;
  --color-wisteria-blue-800: #2f4265;
  --color-wisteria-blue-900: #202d47;
  --color-wisteria-blue-950: #101a2e;
}

SCSS

$wisteria-blue: #7c9ada;
$wisteria-blue-rgb: 124, 154, 218;
$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);
}