These wallpapers almost (but not completely) hide the iPhone Dock and are available for all iPhones in Dark Mode since iOS 14.
There are seven color variations. Full-screen models also mostly (but not completely) hide the Lock Screen light/camera button.
iOS 14–15/16– 7 sheets
The colors that completely hide them would be a dark gray, almost black. Even if it doesn't reach that far, there are spots where the Dock becomes difficult to see.
However, in iOS 17, the saturation is reduced only on the Home Screen according to the saturation of the wallpaper. If you set a wallpaper that is somewhat vibrant to both Lock Screen and Home Screen, you will notice a color change at the moment of unlocking. To reduce this effect, we have adopted spots with slightly lower saturation.