Blue text with green background indicates that a directory is writable by others apart from the owning user and group, and does not have the sticky bit set ( o+w, -t ).

What does green color mean in Linux?

Green: Executable or recognized data file. Cyan (Sky Blue): Symbolic link file. Yellow with black background: Device.

What do the colors mean in Linux?

White (No color code): Regular File or Normal File. Blue: Directory. Bright Green: Executable File. Bright Red: Archive file or Compressed File.