"Red is the color of fire and blood, so it is associated with energy, war, danger, strength, power, determination as well as passion, desire, and love.

Red is a very emotionally intense color. It enhances human metabolism, increases respiration rate, and raises blood pressure. It has very high visibility, which is why stop signs, stoplights, and fire equipment are usually painted red. In heraldry, red is used to indicate courage. It is a color found in many national flags."
I believe a girl must have atleast two red dresses in her closet.
Red makes a guy turn peach because it showcases "CLASS" on the lady.

Repost: https://wstreams.com/the-colour-red-in-the-fashion-world/

Also see the different types of red and their meaning in the above mentioned site.