#8A9FEC

CSS

:root {
  --wisteria-blue: #8a9fec;
  --wisteria-blue-rgb: 138 159 236;
  --wisteria-blue-oklch: oklch(0.717 0.115 271.6);
}

.element {
  color: var(--wisteria-blue);
  background-color: hsl(227 72% 73%);
  border-color: oklch(0.717 0.115 271.6);
}

Tailwind CSS v4

@theme {
  --color-wisteria-blue: #8a9fec;
  --color-wisteria-blue-50: #eaf4ff;
  --color-wisteria-blue-100: #dbe6ff;
  --color-wisteria-blue-200: #c4d2ff;
  --color-wisteria-blue-300: #a4b4f3;
  --color-wisteria-blue-400: #869ae3;
  --color-wisteria-blue-500: #6b80d2;
  --color-wisteria-blue-600: #5b6cb1;
  --color-wisteria-blue-700: #48578e;
  --color-wisteria-blue-800: #33406a;
  --color-wisteria-blue-900: #222c4b;
  --color-wisteria-blue-950: #121931;
}

SCSS

$wisteria-blue: #8a9fec;
$wisteria-blue-rgb: 138, 159, 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);
}