#6E768B

CSS

:root {
  --abandoned-spaceship: #6e768b;
  --abandoned-spaceship-rgb: 110 118 139;
  --abandoned-spaceship-oklch: oklch(0.567 0.034 268.8);
}

.element {
  color: var(--abandoned-spaceship);
  background-color: hsl(223 12% 49%);
  border-color: oklch(0.567 0.034 268.8);
}

Tailwind CSS v4

@theme {
  --color-abandoned-spaceship: #6e768b;
  --color-abandoned-spaceship-50: #f1f5ff;
  --color-abandoned-spaceship-100: #e3e8f4;
  --color-abandoned-spaceship-200: #cfd4e3;
  --color-abandoned-spaceship-300: #b1b7c9;
  --color-abandoned-spaceship-400: #969eb3;
  --color-abandoned-spaceship-500: #7d869d;
  --color-abandoned-spaceship-600: #6a7185;
  --color-abandoned-spaceship-700: #545b6b;
  --color-abandoned-spaceship-800: #3d424e;
  --color-abandoned-spaceship-900: #2a2e37;
  --color-abandoned-spaceship-950: #181b21;
}

SCSS

$abandoned-spaceship: #6e768b;
$abandoned-spaceship-rgb: 110, 118, 139;
$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);
}