The look usually starts with the ambient light, not just camera settings. That warm yellow background is most often shot near sunrise or sunset (golden hour), with the warm light behind or around the subject.

To keep the subject looking natural, photographers often add light to the face with a reflector or flash. A reflector is the simplest option. If using flash, remember:

• Flash has its own fixed color.
• Ambient/background light has its own color.
• White balance affects how both appear.

If you want the background to look warmer than the subject, put a cool/blue gel on the flash, then set white balance for the subject lit by the flash. That makes the flash-lit subject look neutral while the ambient background shifts warmer.

For your night example, the flash looked bluish because its color didn’t match the ambient lighting and white balance choice. Gels are used to intentionally match or contrast flash with the scene.

So the main recipe is: shoot in warm natural light, place the light behind the subject, add fill with a reflector or flash, and if needed use gels plus white balance to separate subject and background color.