#7C98E6

CSS

:root {
  --wisteria-blue: #7c98e6;
  --wisteria-blue-rgb: 124 152 230;
  --wisteria-blue-oklch: oklch(0.691 0.12 268.2);
}

.element {
  color: var(--wisteria-blue);
  background-color: hsl(224 68% 69%);
  border-color: oklch(0.691 0.12 268.2);
}

Tailwind CSS v4

@theme {
  --color-wisteria-blue: #7c98e6;
  --color-wisteria-blue-50: #e8f4ff;
  --color-wisteria-blue-100: #d8e7ff;
  --color-wisteria-blue-200: #c0d3ff;
  --color-wisteria-blue-300: #a0b5f5;
  --color-wisteria-blue-400: #809be5;
  --color-wisteria-blue-500: #6481d5;
  --color-wisteria-blue-600: #556db4;
  --color-wisteria-blue-700: #445891;
  --color-wisteria-blue-800: #2f406c;
  --color-wisteria-blue-900: #202c4c;
  --color-wisteria-blue-950: #0f1932;
}

SCSS

$wisteria-blue: #7c98e6;
$wisteria-blue-rgb: 124, 152, 230;
$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);
}