Based on the HR diagram, a star with an identifying color of white and an absolute magnitude of -6 is likely a massive, luminous star known as supergiant.
In the Hertzsprung-Russell (HR) diagram, stars are plotted based on their color (temperature) and absolute magnitude (intrinsic brightness). A star's position on the HR diagram provide valuable information about its characteristics.
A star identified as "white" in color typically falls in the region of the HR diagram where the most massive and luminous stars are found. These stars are often referred to as "supergiants." Supergiants are extremely bright and can be thousands to millions of times more luminous than the Sun.