Why is red related to danger? Explain you never heard of it before

The ancient red has been used to symbolize love, passion, heat and fire. But at the same time, it also represents anger, hatred, warning signs and danger.

The link between red and danger has been demonstrated throughout human history, from ancient to modern. This can be clearly seen through some of the following examples:

1. Mars, red planet - this name is named after the God of War.
2. In the Middle Ages, the red flag was used in naval battles, to indicate that they would not tolerate the enemy.
3. The term "red alert" originated from World War II, indicating the highest level of alert.
4. In car or motorcycle races, if there is danger to the driver, one will wave a red flag.
5. Red cards will be drawn if a football player plays too dangerous, violating serious laws.
6. On the street, red means stop, because going forward will be dangerous.
7. In painting, an angry person will be represented by a red face.

So the question is why is red used to indicate danger? While there are many other colors. Why not green, yellow or blue? The answer below will be a mix of science and psychology.

Scientific explanation

Red has the longest wavelength in the visible spectrum. This means that red is less obstructed, so it can be easily seen at a distance, even in rain and fog conditions.

Obviously if you want to alert or warn someone about an imminent danger, you need a color with the greatest visibility.

In addition, red is the brightest color of the day, also the most attractive color.

Red has the longest wavelength in the visible spectrum.

Psychology explained

Studies have shown that not only humans but also primates.

The level of response to color decreases with the orange - yellow - white sequence. That proves, the red gives a strong and extremely responsive response to something.

Red is the intense color and causes the strongest reaction.

Red also makes people think of blood, which relates to courage, sacrifice, revolution and pain.

Due to the connection with pain, red causes fear and precaution, making it suitable for color of danger or warning.