#707783

CSS

:root {
  --abandoned-spaceship: #707783;
  --abandoned-spaceship-rgb: 112 119 131;
  --abandoned-spaceship-oklch: oklch(0.567 0.02 261.3);
}

.element {
  color: var(--abandoned-spaceship);
  background-color: hsl(218 8% 48%);
  border-color: oklch(0.567 0.02 261.3);
}

Tailwind CSS v4

@theme {
  --color-abandoned-spaceship: #707783;
  --color-abandoned-spaceship-50: #f2f5fb;
  --color-abandoned-spaceship-100: #e4e8ef;
  --color-abandoned-spaceship-200: #d0d4dd;
  --color-abandoned-spaceship-300: #b2b8c2;
  --color-abandoned-spaceship-400: #989fab;
  --color-abandoned-spaceship-500: #7f8794;
  --color-abandoned-spaceship-600: #6b727d;
  --color-abandoned-spaceship-700: #565b64;
  --color-abandoned-spaceship-800: #3e434a;
  --color-abandoned-spaceship-900: #2b2e33;
  --color-abandoned-spaceship-950: #181b1f;
}

SCSS

$abandoned-spaceship: #707783;
$abandoned-spaceship-rgb: 112, 119, 131;
$abandoned-spaceship-light: mix(#fff, $abandoned-spaceship, 20%);
$abandoned-spaceship-dark: mix(#000, $abandoned-spaceship, 20%);

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