#844ED2

CSS

:root {
  --purple-rain: #844ed2;
  --purple-rain-rgb: 132 78 210;
  --purple-rain-oklch: oklch(0.553 0.195 298.7);
}

.element {
  color: var(--purple-rain);
  background-color: hsl(265 59% 56%);
  border-color: oklch(0.553 0.195 298.7);
}

Tailwind CSS v4

@theme {
  --color-purple-rain: #844ed2;
  --color-purple-rain-50: #fee9ff;
  --color-purple-rain-100: #f2d9ff;
  --color-purple-rain-200: #e2c1ff;
  --color-purple-rain-300: #c89eff;
  --color-purple-rain-400: #af7fff;
  --color-purple-rain-500: #9a5ef2;
  --color-purple-rain-600: #8250cc;
  --color-purple-rain-700: #6840a4;
  --color-purple-rain-800: #4b2e7c;
  --color-purple-rain-900: #342058;
  --color-purple-rain-950: #200e3b;
}

SCSS

$purple-rain: #844ed2;
$purple-rain-rgb: 132, 78, 210;
$purple-rain-light: mix(#fff, $purple-rain, 20%);
$purple-rain-dark: mix(#000, $purple-rain, 20%);

.element {
  color: $purple-rain;
  box-shadow: 0 0 0 2px rgba($purple-rain, 0.35);
}