#697790

CSS

:root {
  --infinity-and-beyond: #697790;
  --infinity-and-beyond-rgb: 105 119 144;
  --infinity-and-beyond-oklch: oklch(0.567 0.042 262);
}

.element {
  color: var(--infinity-and-beyond);
  background-color: hsl(218 16% 49%);
  border-color: oklch(0.567 0.042 262);
}

Tailwind CSS v4

@theme {
  --color-infinity-and-beyond: #697790;
  --color-infinity-and-beyond-50: #eff5ff;
  --color-infinity-and-beyond-100: #e1e8f7;
  --color-infinity-and-beyond-200: #cbd5e7;
  --color-infinity-and-beyond-300: #acb8ce;
  --color-infinity-and-beyond-400: #919fb8;
  --color-infinity-and-beyond-500: #7787a3;
  --color-infinity-and-beyond-600: #65728a;
  --color-infinity-and-beyond-700: #505b6e;
  --color-infinity-and-beyond-800: #3a4351;
  --color-infinity-and-beyond-900: #282e39;
  --color-infinity-and-beyond-950: #161b23;
}

SCSS

$infinity-and-beyond: #697790;
$infinity-and-beyond-rgb: 105, 119, 144;
$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);
}