#657891

CSS

:root {
  --infinity-and-beyond: #657891;
  --infinity-and-beyond-rgb: 101 120 145;
  --infinity-and-beyond-oklch: oklch(0.567 0.045 255.4);
}

.element {
  color: var(--infinity-and-beyond);
  background-color: hsl(214 18% 48%);
  border-color: oklch(0.567 0.045 255.4);
}

Tailwind CSS v4

@theme {
  --color-infinity-and-beyond: #657891;
  --color-infinity-and-beyond-50: #edf6ff;
  --color-infinity-and-beyond-100: #dfe9f7;
  --color-infinity-and-beyond-200: #c8d5e8;
  --color-infinity-and-beyond-300: #a9b9cf;
  --color-infinity-and-beyond-400: #8da0b9;
  --color-infinity-and-beyond-500: #7388a4;
  --color-infinity-and-beyond-600: #61738b;
  --color-infinity-and-beyond-700: #4e5c6f;
  --color-infinity-and-beyond-800: #384352;
  --color-infinity-and-beyond-900: #262f39;
  --color-infinity-and-beyond-950: #141b23;
}

SCSS

$infinity-and-beyond: #657891;
$infinity-and-beyond-rgb: 101, 120, 145;
$infinity-and-beyond-light: mix(#fff, $infinity-and-beyond, 20%);
$infinity-and-beyond-dark: mix(#000, $infinity-and-beyond, 20%);

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