#69758D

CSS

:root {
  --infinity-and-beyond: #69758d;
  --infinity-and-beyond-rgb: 105 117 141;
  --infinity-and-beyond-oklch: oklch(0.561 0.04 264.2);
}

.element {
  color: var(--infinity-and-beyond);
  background-color: hsl(220 15% 48%);
  border-color: oklch(0.561 0.04 264.2);
}

Tailwind CSS v4

@theme {
  --color-infinity-and-beyond: #69758d;
  --color-infinity-and-beyond-50: #f0f5ff;
  --color-infinity-and-beyond-100: #e2e8f6;
  --color-infinity-and-beyond-200: #ccd4e6;
  --color-infinity-and-beyond-300: #aeb7cd;
  --color-infinity-and-beyond-400: #939fb7;
  --color-infinity-and-beyond-500: #7986a1;
  --color-infinity-and-beyond-600: #667288;
  --color-infinity-and-beyond-700: #525b6d;
  --color-infinity-and-beyond-800: #3b4351;
  --color-infinity-and-beyond-900: #282e38;
  --color-infinity-and-beyond-950: #161b23;
}

SCSS

$infinity-and-beyond: #69758d;
$infinity-and-beyond-rgb: 105, 117, 141;
$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);
}