What is the general color associated with the hottest stellar types, such as O and B stars, which White Dwarfs can resemble thermally?

Answer

Blue or blue-white

Stars that are very hot, including the O and B spectral types, typically emit light concentrated in the blue and ultraviolet parts of the spectrum, causing them to appear blue or blue-white.

What is the general color associated with the hottest stellar types, such as O and B stars, which White Dwarfs can resemble thermally?
temperaturestarLuminosity