#7E9DC6

CSS

:root {
  --wisteria-blue: #7e9dc6;
  --wisteria-blue-rgb: 126 157 198;
  --wisteria-blue-oklch: oklch(0.688 0.07 255.6);
}

.element {
  color: var(--wisteria-blue);
  background-color: hsl(214 39% 64%);
  border-color: oklch(0.688 0.07 255.6);
}

Tailwind CSS v4

@theme {
  --color-wisteria-blue: #7e9dc6;
  --color-wisteria-blue-50: #e9f6ff;
  --color-wisteria-blue-100: #dae9ff;
  --color-wisteria-blue-200: #c2d6f3;
  --color-wisteria-blue-300: #a1b9dc;
  --color-wisteria-blue-400: #83a1c8;
  --color-wisteria-blue-500: #6788b4;
  --color-wisteria-blue-600: #577398;
  --color-wisteria-blue-700: #465c7a;
  --color-wisteria-blue-800: #31445a;
  --color-wisteria-blue-900: #212f3f;
  --color-wisteria-blue-950: #111b28;
}

SCSS

$wisteria-blue: #7e9dc6;
$wisteria-blue-rgb: 126, 157, 198;
$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);
}