#1F2732

CSS

:root {
  --infinity: #1f2732;
  --infinity-rgb: 31 39 50;
  --infinity-oklch: oklch(0.27 0.024 256.4);
}

.element {
  color: var(--infinity);
  background-color: hsl(215 23% 16%);
  border-color: oklch(0.27 0.024 256.4);
}

Tailwind CSS v4

@theme {
  --color-infinity: #1f2732;
  --color-infinity-50: #f1f5fc;
  --color-infinity-100: #e3e8f0;
  --color-infinity-200: #ced5df;
  --color-infinity-300: #b0b8c4;
  --color-infinity-400: #969fad;
  --color-infinity-500: #7c8796;
  --color-infinity-600: #69727f;
  --color-infinity-700: #545b66;
  --color-infinity-800: #3d434b;
  --color-infinity-900: #2a2e34;
  --color-infinity-950: #171b1f;
}

SCSS

$infinity: #1f2732;
$infinity-rgb: 31, 39, 50;
$infinity-light: mix(#fff, $infinity, 20%);
$infinity-dark: mix(#000, $infinity, 20%);

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