#7D95F9

CSS

:root {
  --wisteria-blue: #7d95f9;
  --wisteria-blue-rgb: 125 149 249;
  --wisteria-blue-oklch: oklch(0.696 0.149 271.8);
}

.element {
  color: var(--wisteria-blue);
  background-color: hsl(228 91% 73%);
  border-color: oklch(0.696 0.149 271.8);
}

Tailwind CSS v4

@theme {
  --color-wisteria-blue: #7d95f9;
  --color-wisteria-blue-50: #e7f3ff;
  --color-wisteria-blue-100: #d8e5ff;
  --color-wisteria-blue-200: #c0d0ff;
  --color-wisteria-blue-300: #9fb1ff;
  --color-wisteria-blue-400: #8097f6;
  --color-wisteria-blue-500: #657ce8;
  --color-wisteria-blue-600: #5569c3;
  --color-wisteria-blue-700: #44549d;
  --color-wisteria-blue-800: #2e3e76;
  --color-wisteria-blue-900: #1f2a53;
  --color-wisteria-blue-950: #0f1738;
}

SCSS

$wisteria-blue: #7d95f9;
$wisteria-blue-rgb: 125, 149, 249;
$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);
}