What is the best suit color to wear to an interview?

Grey.

Not too formal.

Minimizes sharp look.

Within the bounds of what is acceptable for the role in question, the colour that suits you best.

Depends the culture/code dress of each country, in fact.

But is proved that the red (not the bright one) is one of the best colors to dress.

It´s powerfull, shows passion, courage, excitment and energy. As example, be attentive how many companies/political leaders use a red tie.. (these last ones almost all use in campaigns)

Give a read to this article:

http://www.empower-yourself-with-color-psychology.com/job-interviews.html

Preferred to use pastel colors

Women not extravagant make-up accessory

It all depends upon your cultural background and industry vertical...Like dress code for a female would be totally different in Saudi Arabia because of culture as compare to interview in America.

Like wise dress code for a female in Saudi Arabia for fashion industry (casual/formal/fashionable within culture limits) would be different/change from dress code for Marketing Field (More formal).

As far suit color is concern, try to wear light color suits for interview probably white and gray. It looks Sober. Light color formula also applied on makeup, keep it simple. Don't wear shocking pink or red color because you are going for interview not for a date LoL. 

Hope its helpful. 

It all depends upon the type of job for which you are being interviewed. The hospitality sector may require you you dress up with an aim to show grace & poise. However best is to go for a formal dress in dark grey/black business attire. At times a formal national dress may be appropriate. Your attire should be comfortable, well fitting and suite your personality & you should be able to carry it off with dignity & grace.

Not too much of makeup & hair properly done.

It depends on the following factors;

·         Nature of the job e.g. for lawyer’s job black track suit is best

·         Culture e.g. in western track suit is best but in Arab “thwb”

·         Gender

·         Time

·         Corporate culture