The light has different color depending on source Correlated Color Temperature.
The human visual system, eyes + brain, adapts quickly to changes in the color of the light that illuminates our world.
Objects that appear under sunlight to be a certain color, such as white, still look the same color when indoors, illuminated by tungsten light. This happens even though the tungsten light is very yellow compared to sunlight.
Color constancy is an every day experience.

Without correction, cameras would show the colour as it truly is i.e. white-bluish in sunlight and yellow-reddish in normal room lighting.

White Balance is an adjustment of colors so that an object that human visual system perceives as white is white in the scene.

Film users have poor control over white balance. They can buy a film balanced for typical daylight, and the only other option is to switch to a special tungsten-balanced film for shooting under studio tungsten lighting.

Digital cameras, however, can compensate for different-coloured lighting by altering the ratios of red, green and blue as the image is processed and saved.
By default, digital cameras adjust the white balance automatically, but there will be situations in which better results can be obtained overriding this automatic setting and choosing the white balance manually.