#7A9ADC

CSS

:root {
  --wisteria-blue: #7a9adc;
  --wisteria-blue-rgb: 122 154 220;
  --wisteria-blue-oklch: oklch(0.689 0.104 264);
}

.element {
  color: var(--wisteria-blue);
  background-color: hsl(220 58% 67%);
  border-color: oklch(0.689 0.104 264);
}

Tailwind CSS v4

@theme {
  --color-wisteria-blue: #7a9adc;
  --color-wisteria-blue-50: #e7f5ff;
  --color-wisteria-blue-100: #d8e8ff;
  --color-wisteria-blue-200: #bfd4ff;
  --color-wisteria-blue-300: #9eb7ee;
  --color-wisteria-blue-400: #7f9edd;
  --color-wisteria-blue-500: #6384cb;
  --color-wisteria-blue-600: #5470ac;
  --color-wisteria-blue-700: #435a8a;
  --color-wisteria-blue-800: #2e4266;
  --color-wisteria-blue-900: #1f2d48;
  --color-wisteria-blue-950: #0f1a2f;
}

SCSS

$wisteria-blue: #7a9adc;
$wisteria-blue-rgb: 122, 154, 220;
$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);
}