Color meanings and the art of using color symbolism

Traffic lights

  By now we should all be familiar with the 3 colors of traffic lights. Red means stop, green means go, and yellow means proceed with caution. However, there is a reason why these colors were chosen. Red is the color with the longest wavelength which means it can be seen from a bigger distance, allowing drivers to see it from far away. Yellow has a shorter wavelength than red but it’s longer than green. These wavelengths make it clearer when the lights change from green to yellow or from yellow to red.