#737480

CSS

:root {
  --abandoned-spaceship: #737480;
  --abandoned-spaceship-rgb: 115 116 128;
  --abandoned-spaceship-oklch: oklch(0.562 0.018 282);
}

.element {
  color: var(--abandoned-spaceship);
  background-color: hsl(235 5% 48%);
  border-color: oklch(0.562 0.018 282);
}

Tailwind CSS v4

@theme {
  --color-abandoned-spaceship: #737480;
  --color-abandoned-spaceship-50: #f4f4fa;
  --color-abandoned-spaceship-100: #e7e7ee;
  --color-abandoned-spaceship-200: #d3d3dc;
  --color-abandoned-spaceship-300: #b6b6c1;
  --color-abandoned-spaceship-400: #9c9da9;
  --color-abandoned-spaceship-500: #848592;
  --color-abandoned-spaceship-600: #70717c;
  --color-abandoned-spaceship-700: #595a63;
  --color-abandoned-spaceship-800: #414249;
  --color-abandoned-spaceship-900: #2d2d32;
  --color-abandoned-spaceship-950: #1a1a1e;
}

SCSS

$abandoned-spaceship: #737480;
$abandoned-spaceship-rgb: 115, 116, 128;
$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);
}