#7D9CCC

CSS

:root {
  --wisteria-blue: #7d9ccc;
  --wisteria-blue-rgb: 125 156 204;
  --wisteria-blue-oklch: oklch(0.688 0.079 259);
}

.element {
  color: var(--wisteria-blue);
  background-color: hsl(216 44% 65%);
  border-color: oklch(0.688 0.079 259);
}

Tailwind CSS v4

@theme {
  --color-wisteria-blue: #7d9ccc;
  --color-wisteria-blue-50: #e9f6ff;
  --color-wisteria-blue-100: #d9e9ff;
  --color-wisteria-blue-200: #c1d5f7;
  --color-wisteria-blue-300: #a1b8e1;
  --color-wisteria-blue-400: #82a0ce;
  --color-wisteria-blue-500: #6687bb;
  --color-wisteria-blue-600: #57729e;
  --color-wisteria-blue-700: #455c7f;
  --color-wisteria-blue-800: #30435e;
  --color-wisteria-blue-900: #212e42;
  --color-wisteria-blue-950: #101b2a;
}

SCSS

$wisteria-blue: #7d9ccc;
$wisteria-blue-rgb: 125, 156, 204;
$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);
}