#B3BAD8

CSS

:root {
  --stardust-evening: #b3bad8;
  --stardust-evening-rgb: 179 186 216;
  --stardust-evening-oklch: oklch(0.793 0.043 275);
}

.element {
  color: var(--stardust-evening);
  background-color: hsl(229 32% 77%);
  border-color: oklch(0.793 0.043 275);
}

Tailwind CSS v4

@theme {
  --color-stardust-evening: #b3bad8;
  --color-stardust-evening-50: #f2f4ff;
  --color-stardust-evening-100: #e4e7f7;
  --color-stardust-evening-200: #cfd3e7;
  --color-stardust-evening-300: #b1b6ce;
  --color-stardust-evening-400: #979db9;
  --color-stardust-evening-500: #7d84a3;
  --color-stardust-evening-600: #6a708a;
  --color-stardust-evening-700: #555a6f;
  --color-stardust-evening-800: #3d4252;
  --color-stardust-evening-900: #2a2d39;
  --color-stardust-evening-950: #181a23;
}

SCSS

$stardust-evening: #b3bad8;
$stardust-evening-rgb: 179, 186, 216;
$stardust-evening-light: mix(#fff, $stardust-evening, 20%);
$stardust-evening-dark: mix(#000, $stardust-evening, 20%);

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