#7D9BD7

CSS

:root {
  --wisteria-blue: #7d9bd7;
  --wisteria-blue-rgb: 125 155 215;
  --wisteria-blue-oklch: oklch(0.69 0.095 263.7);
}

.element {
  color: var(--wisteria-blue);
  background-color: hsl(220 53% 67%);
  border-color: oklch(0.69 0.095 263.7);
}

Tailwind CSS v4

@theme {
  --color-wisteria-blue: #7d9bd7;
  --color-wisteria-blue-50: #e8f5ff;
  --color-wisteria-blue-100: #d9e8ff;
  --color-wisteria-blue-200: #c1d4fe;
  --color-wisteria-blue-300: #a0b7e9;
  --color-wisteria-blue-400: #819ed7;
  --color-wisteria-blue-500: #6585c5;
  --color-wisteria-blue-600: #5671a7;
  --color-wisteria-blue-700: #445a86;
  --color-wisteria-blue-800: #304263;
  --color-wisteria-blue-900: #202e46;
  --color-wisteria-blue-950: #101a2d;
}

SCSS

$wisteria-blue: #7d9bd7;
$wisteria-blue-rgb: 125, 155, 215;
$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);
}