Fog of War

CSS

:root {
  --fog-of-war: #112233;
  --fog-of-war-rgb: 17 34 51;
  --fog-of-war-oklch: oklch(0.246 0.04 249.7);
}

.element {
  color: var(--fog-of-war);
  background-color: hsl(210 50% 13%);
  border-color: oklch(0.246 0.04 249.7);
}

Tailwind CSS v4

@theme {
  --color-fog-of-war: #112233;
  --color-fog-of-war-50: #edf6ff;
  --color-fog-of-war-100: #dfe9f5;
  --color-fog-of-war-200: #c8d6e5;
  --color-fog-of-war-300: #a9b9cc;
  --color-fog-of-war-400: #8da1b6;
  --color-fog-of-war-500: #7289a0;
  --color-fog-of-war-600: #617487;
  --color-fog-of-war-700: #4d5d6c;
  --color-fog-of-war-800: #384450;
  --color-fog-of-war-900: #262f37;
  --color-fog-of-war-950: #141b22;
}

SCSS

$fog-of-war: #112233;
$fog-of-war-rgb: 17, 34, 51;
$fog-of-war-light: mix(#fff, $fog-of-war, 20%);
$fog-of-war-dark: mix(#000, $fog-of-war, 20%);

.element {
  color: $fog-of-war;
  box-shadow: 0 0 0 2px rgba($fog-of-war, 0.35);
}