Night Out

CSS

:root {
  --night-out: #656a6e;
  --night-out-rgb: 101 106 110;
  --night-out-oklch: oklch(0.521 0.009 241.8);
}

.element {
  color: var(--night-out);
  background-color: hsl(207 4% 41%);
  border-color: oklch(0.521 0.009 241.8);
}

Tailwind CSS v4

@theme {
  --color-night-out: #656a6e;
  --color-night-out-50: #f3f5f7;
  --color-night-out-100: #e5e8eb;
  --color-night-out-200: #d1d5d8;
  --color-night-out-300: #b4b8bc;
  --color-night-out-400: #9a9fa3;
  --color-night-out-500: #81878c;
  --color-night-out-600: #6d7276;
  --color-night-out-700: #575b5e;
  --color-night-out-800: #404345;
  --color-night-out-900: #2c2e30;
  --color-night-out-950: #191b1c;
}

SCSS

$night-out: #656a6e;
$night-out-rgb: 101, 106, 110;
$night-out-light: mix(#fff, $night-out, 20%);
$night-out-dark: mix(#000, $night-out, 20%);

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