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Worldpress logo or volkswagen
minolta
Hewlett Packard
indigo
Roxy
It is a white star with a blue circle surrounding it.
Konica minolta
Volks Wagen
You hardly mean the Grateful Dead?
The logo you are describing is the one used by the American sportswear brand, "Kappa." The logo features a blue circle with a red upside-down "V" and a white circle in the center. Kappa is known for its athletic apparel and is recognized for its distinctive logo, which often features two figures sitting back-to-back.
It seems your question is incomplete. However, a well-known logo that features a blue circle is the one for Facebook, which includes a white lowercase "f" inside the circle. Other notable examples include the logo for the Earth Day Network, which features a blue circle representing the planet. If you have a specific logo in mind, please provide more details!
Konica minolta