ATP World Tour
ATP World Tour
A logo with a blue background and white letters could refer to several brands, but a prominent example is the Facebook logo. It features a simple blue square with white lowercase letters spelling "f." Another example is the LinkedIn logo, which also uses a blue background and white lettering.
I think it is the boris becker brand logo.
Pfizer
maserati
Volvo's logo is 'VOLVO', in white letters, on a blue background.
Hot dog
peugeot
lloyds
A white eagle in a blue background
Konica Minolta
Finland.