A clock that uses three coloured rotating blocks to tell the time.

The first block rotates once an hour, changing from #000000 to #ff0000
The second block rotates once a minute, changing from #000000 to #00ff00
The third block rotates once a second, changing from #000000 to #0000ff

Click on the window to read the actual time if you find that confusing. Or look at your phone.