Night Fog

CSS

:root {
  --night-fog: #2d1962;
  --night-fog-rgb: 45 25 98;
  --night-fog-oklch: oklch(0.29 0.121 289.2);
}

.element {
  color: var(--night-fog);
  background-color: hsl(256 59% 24%);
  border-color: oklch(0.29 0.121 289.2);
}

Tailwind CSS v4

@theme {
  --color-night-fog: #2d1962;
  --color-night-fog-50: #f5f0ff;
  --color-night-fog-100: #e7e2ff;
  --color-night-fog-200: #d4ccff;
  --color-night-fog-300: #b7adf1;
  --color-night-fog-400: #9c92e1;
  --color-night-fog-500: #8577d0;
  --color-night-fog-600: #7065b0;
  --color-night-fog-700: #5a508d;
  --color-night-fog-800: #403b6a;
  --color-night-fog-900: #2c284a;
  --color-night-fog-950: #191631;
}

SCSS

$night-fog: #2d1962;
$night-fog-rgb: 45, 25, 98;
$night-fog-light: mix(#fff, $night-fog, 20%);
$night-fog-dark: mix(#000, $night-fog, 20%);

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