#7F98E5

CSS

:root {
  --wisteria-blue: #7f98e5;
  --wisteria-blue-rgb: 127 152 229;
  --wisteria-blue-oklch: oklch(0.692 0.117 269.5);
}

.element {
  color: var(--wisteria-blue);
  background-color: hsl(225 66% 70%);
  border-color: oklch(0.692 0.117 269.5);
}

Tailwind CSS v4

@theme {
  --color-wisteria-blue: #7f98e5;
  --color-wisteria-blue-50: #e9f4ff;
  --color-wisteria-blue-100: #d9e7ff;
  --color-wisteria-blue-200: #c2d2ff;
  --color-wisteria-blue-300: #a2b4f4;
  --color-wisteria-blue-400: #839be4;
  --color-wisteria-blue-500: #6781d4;
  --color-wisteria-blue-600: #586db3;
  --color-wisteria-blue-700: #46578f;
  --color-wisteria-blue-800: #30406b;
  --color-wisteria-blue-900: #212c4b;
  --color-wisteria-blue-950: #101932;
}

SCSS

$wisteria-blue: #7f98e5;
$wisteria-blue-rgb: 127, 152, 229;
$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);
}