#101535

CSS

:root {
  --infinite-night: #101535;
  --infinite-night-rgb: 16 21 53;
  --infinite-night-oklch: oklch(0.212 0.063 273.2);
}

.element {
  color: var(--infinite-night);
  background-color: hsl(232 54% 14%);
  border-color: oklch(0.212 0.063 273.2);
}

Tailwind CSS v4

@theme {
  --color-infinite-night: #101535;
  --color-infinite-night-50: #f0f4ff;
  --color-infinite-night-100: #e1e7fd;
  --color-infinite-night-200: #ccd3f0;
  --color-infinite-night-300: #aeb5d8;
  --color-infinite-night-400: #929cc4;
  --color-infinite-night-500: #7884b0;
  --color-infinite-night-600: #666f95;
  --color-infinite-night-700: #515977;
  --color-infinite-night-800: #3a4158;
  --color-infinite-night-900: #282d3e;
  --color-infinite-night-950: #161a27;
}

SCSS

$infinite-night: #101535;
$infinite-night-rgb: 16, 21, 53;
$infinite-night-light: mix(#fff, $infinite-night, 20%);
$infinite-night-dark: mix(#000, $infinite-night, 20%);

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