QRadar Console doesn't have a dark mode at this time.
QRadar DASH has a dark mode:
https://www.ibm.com/support/pages/changing-background-color-widgets-dash
Some have modified the Console to make a dark mode:
https://www.ibm.com/mysupport/s/question/0D50z00006PEJb3/changing-how-qradar-looks-in-the-browser?language=en_US
Hope that helps.
#QRadar#Support#SupportMigration