Which star color indicates the greater surface temperature of the star
The answer is: bluish white color;
The bluish-white color is the color of the star's highest surface temperature.
The colors and temperatures of the stars vary according to their surface, as each star has a specific temperature that is reflected in its own color.
Reddish stars reflect lower temperatures than yellow and blue stars, as the latter have the highest temperatures.
Astronomers can measure the temperature of stars in one of the well-known ways, which is the color index of the star, which determines the difference in the magnitudes measured at two wavelengths.
Accordingly, it can be said that stars that are light blue or white have higher surface temperatures.
So by observing the colors of the stars, people can roughly determine the surface temperature of each star.
