#7B97ED

CSS

:root {
  --wisteria-blue: #7b97ed;
  --wisteria-blue-rgb: 123 151 237;
  --wisteria-blue-oklch: oklch(0.692 0.131 269.1);
}

.element {
  color: var(--wisteria-blue);
  background-color: hsl(225 76% 71%);
  border-color: oklch(0.692 0.131 269.1);
}

Tailwind CSS v4

@theme {
  --color-wisteria-blue: #7b97ed;
  --color-wisteria-blue-50: #e7f4ff;
  --color-wisteria-blue-100: #d7e6ff;
  --color-wisteria-blue-200: #bfd2ff;
  --color-wisteria-blue-300: #9fb4fb;
  --color-wisteria-blue-400: #7f9aec;
  --color-wisteria-blue-500: #637fdc;
  --color-wisteria-blue-600: #546cba;
  --color-wisteria-blue-700: #435695;
  --color-wisteria-blue-800: #2e406f;
  --color-wisteria-blue-900: #1f2c4f;
  --color-wisteria-blue-950: #0f1934;
}

SCSS

$wisteria-blue: #7b97ed;
$wisteria-blue-rgb: 123, 151, 237;
$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);
}