Users on X reported the change early on Friday, noting that the Facebook app's logo on their mobile devices — typically a white F on a blue background — had changed to a blue F on a black ...

Some people have been perplexed when they found the Facebook icon as black. ... the Facebook logo sporting a blue "F" on a black tile rather than a white "F" on a ... it changes to the black logo.

The Facebook icon now is appearing as a black background with a blue "F," rather than the traditional white on ... Dozens of users chimed in on a post titled "What's Wrong With The Facebook Logo?" ...

Once I noticed just how many app logos have white-on-black color schemes — including Threads, the BBC, Uber, Apple TV and, yup, The Washington Post — I had to know what the heck was going on ...

USA TODAY Network journalist Ilana Keller reported seeing a black logo after downloading a Facebook app update on her iPhone, as well as iOS update 17.6.1. Keller's phone was not in dark mode.