#7997EF

CSS

:root {
  --wisteria-blue: #7997ef;
  --wisteria-blue-rgb: 121 151 239;
  --wisteria-blue-oklch: oklch(0.692 0.134 268.5);
}

.element {
  color: var(--wisteria-blue);
  background-color: hsl(225 79% 71%);
  border-color: oklch(0.692 0.134 268.5);
}

Tailwind CSS v4

@theme {
  --color-wisteria-blue: #7997ef;
  --color-wisteria-blue-50: #e6f4ff;
  --color-wisteria-blue-100: #d7e6ff;
  --color-wisteria-blue-200: #bed2ff;
  --color-wisteria-blue-300: #9db4fd;
  --color-wisteria-blue-400: #7d9aee;
  --color-wisteria-blue-500: #617fdf;
  --color-wisteria-blue-600: #526cbc;
  --color-wisteria-blue-700: #425697;
  --color-wisteria-blue-800: #2d4071;
  --color-wisteria-blue-900: #1e2c4f;
  --color-wisteria-blue-950: #0e1935;
}

SCSS

$wisteria-blue: #7997ef;
$wisteria-blue-rgb: 121, 151, 239;
$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);
}