Red is a powerful colour that evokes a wide range of feelings, from strong, passionate love to rage and violence, and it stands for both cupid and the devil. It is a fiery, powerful, energising colour that stands for excitement and vigour. According to studies, the colour red can have physiological impacts on the body, including raised blood pressure, increased libido, increased respiration rates, increased metabolism, more enthusiasm, more vitality, and increased self-assurance.

One of the reasons fire vehicles and fire engines are typically painted red is that red is a highly visible colour that may focus attention fast and get people to make quick judgments. Stop signs and stop lights employ the colour red to warn cars about the dangers of the intersection, while flashing red lights indicate danger or an emergency.

The meaning of red denotes strength and bravery. The typical red power tie or red suit in business, as well as the red carpet for celebrities and VIPs, are all based on the colour red. Red is a hue that is frequently used in national flags, on shields, and in award patches because it is associated with valour and bravery.