#7072A8

CSS

:root {
  --twinkle-night: #7072a8;
  --twinkle-night-rgb: 112 114 168;
  --twinkle-night-oklch: oklch(0.572 0.083 281.8);
}

.element {
  color: var(--twinkle-night);
  background-color: hsl(238 24% 55%);
  border-color: oklch(0.572 0.083 281.8);
}

Tailwind CSS v4

@theme {
  --color-twinkle-night: #7072a8;
  --color-twinkle-night-50: #f2f3ff;
  --color-twinkle-night-100: #e4e5ff;
  --color-twinkle-night-200: #cfd0f7;
  --color-twinkle-night-300: #b1b2e1;
  --color-twinkle-night-400: #9699cf;
  --color-twinkle-night-500: #7d7fbc;
  --color-twinkle-night-600: #6a6c9f;
  --color-twinkle-night-700: #55567f;
  --color-twinkle-night-800: #3c3f5f;
  --color-twinkle-night-900: #2a2b42;
  --color-twinkle-night-950: #17192b;
}

SCSS

$twinkle-night: #7072a8;
$twinkle-night-rgb: 112, 114, 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);
}