Dark Wallpapers for iPhone & Android

A little, yes. On an OLED display each pixel emits its own light, so black areas are switched off and draw almost nothing; a dark wallpaper therefore uses less power than a bright one while the screen is on. The saving is real but modest, since the screen is only one part of the phone's power draw. Designs such as Infinite Dark Corridor and Abstract Black Form keep most of the frame near black, which is where the effect is largest.

Not usually. iOS and Android render the clock, notifications and widgets in light text over dark backgrounds automatically, so a dark wallpaper tends to improve legibility rather than hurt it. The exception is a busy mid-tone image where text lands on a bright detail. The ScreenLux preview shows every wallpaper under a Lock Screen mockup, so you can check where the clock falls on Coastal Sunset Drive or Majestic Bald Eagle before you download.

Yes. This dark page gathers 92 wallpapers where the overall image is low-key: night scenes, dim interiors, deep colors like Deep Blue and Crimson Fade. The black page is stricter and holds 72 wallpapers where true black dominates the frame, which suits OLED screens and always-on displays. Many designs appear on both, Hand On Glass and Dragon Over Ruins among them, but if you want the darkest possible Lock Screen, start with black.