#7E9CC9

CSS

:root {
  --wisteria-blue: #7e9cc9;
  --wisteria-blue-rgb: 126 156 201;
  --wisteria-blue-oklch: oklch(0.687 0.075 258.3);
}

.element {
  color: var(--wisteria-blue);
  background-color: hsl(216 41% 64%);
  border-color: oklch(0.687 0.075 258.3);
}

Tailwind CSS v4

@theme {
  --color-wisteria-blue: #7e9cc9;
  --color-wisteria-blue-50: #e9f6ff;
  --color-wisteria-blue-100: #dae9ff;
  --color-wisteria-blue-200: #c2d5f5;
  --color-wisteria-blue-300: #a2b9de;
  --color-wisteria-blue-400: #83a0cb;
  --color-wisteria-blue-500: #6787b8;
  --color-wisteria-blue-600: #58739b;
  --color-wisteria-blue-700: #465c7d;
  --color-wisteria-blue-800: #31435c;
  --color-wisteria-blue-900: #212f41;
  --color-wisteria-blue-950: #111b29;
}

SCSS

$wisteria-blue: #7e9cc9;
$wisteria-blue-rgb: 126, 156, 201;
$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);
}