#7271A8

CSS

:root {
  --twinkle-night: #7271a8;
  --twinkle-night-rgb: 114 113 168;
  --twinkle-night-oklch: oklch(0.572 0.084 284.2);
}

.element {
  color: var(--twinkle-night);
  background-color: hsl(241 24% 55%);
  border-color: oklch(0.572 0.084 284.2);
}

Tailwind CSS v4

@theme {
  --color-twinkle-night: #7271a8;
  --color-twinkle-night-50: #f3f2ff;
  --color-twinkle-night-100: #e5e4ff;
  --color-twinkle-night-200: #d1d0f7;
  --color-twinkle-night-300: #b3b2e1;
  --color-twinkle-night-400: #9898cf;
  --color-twinkle-night-500: #807ebc;
  --color-twinkle-night-600: #6c6b9f;
  --color-twinkle-night-700: #56567f;
  --color-twinkle-night-800: #3e3f5f;
  --color-twinkle-night-900: #2a2b42;
  --color-twinkle-night-950: #18182b;
}

SCSS

$twinkle-night: #7271a8;
$twinkle-night-rgb: 114, 113, 168;
$twinkle-night-light: mix(#fff, $twinkle-night, 20%);
$twinkle-night-dark: mix(#000, $twinkle-night, 20%);

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