Dark Renaissance

CSS

:root {
  --dark-renaissance: #434257;
  --dark-renaissance-rgb: 67 66 87;
  --dark-renaissance-oklch: oklch(0.389 0.035 286.8);
}

.element {
  color: var(--dark-renaissance);
  background-color: hsl(243 14% 30%);
  border-color: oklch(0.389 0.035 286.8);
}

Tailwind CSS v4

@theme {
  --color-dark-renaissance: #434257;
  --color-dark-renaissance-50: #f4f4ff;
  --color-dark-renaissance-100: #e7e6f3;
  --color-dark-renaissance-200: #d3d2e3;
  --color-dark-renaissance-300: #b6b5c9;
  --color-dark-renaissance-400: #9c9cb3;
  --color-dark-renaissance-500: #84839d;
  --color-dark-renaissance-600: #706f85;
  --color-dark-renaissance-700: #59596a;
  --color-dark-renaissance-800: #41414e;
  --color-dark-renaissance-900: #2d2d37;
  --color-dark-renaissance-950: #1a1a21;
}

SCSS

$dark-renaissance: #434257;
$dark-renaissance-rgb: 67, 66, 87;
$dark-renaissance-light: mix(#fff, $dark-renaissance, 20%);
$dark-renaissance-dark: mix(#000, $dark-renaissance, 20%);

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