#6A7889

CSS

:root {
  --abandoned-spaceship: #6a7889;
  --abandoned-spaceship-rgb: 106 120 137;
  --abandoned-spaceship-oklch: oklch(0.567 0.031 253.4);
}

.element {
  color: var(--abandoned-spaceship);
  background-color: hsl(213 13% 48%);
  border-color: oklch(0.567 0.031 253.4);
}

Tailwind CSS v4

@theme {
  --color-abandoned-spaceship: #6a7889;
  --color-abandoned-spaceship-50: #eff6fe;
  --color-abandoned-spaceship-100: #e1e9f2;
  --color-abandoned-spaceship-200: #ccd5e2;
  --color-abandoned-spaceship-300: #adb8c8;
  --color-abandoned-spaceship-400: #92a0b1;
  --color-abandoned-spaceship-500: #78889b;
  --color-abandoned-spaceship-600: #667383;
  --color-abandoned-spaceship-700: #515c69;
  --color-abandoned-spaceship-800: #3b434d;
  --color-abandoned-spaceship-900: #282e36;
  --color-abandoned-spaceship-950: #161b21;
}

SCSS

$abandoned-spaceship: #6a7889;
$abandoned-spaceship-rgb: 106, 120, 137;
$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);
}