There is no specific color that has been proven to calm wasps. In fact, wasps are not attracted to colors in the same way that bees are attracted to flowers. Wasps are more attracted to sweet and sugary scents than they are to colors. That being said, it is generally a good idea to avoid wearing bright, floral or patterned clothing when you are outside, especially if you are in an area where wasps are present. This is because these types of clothing can resemble flowers and attract the attention of wasps. It's also important to avoid swatting at or agitating wasps, as this can make them feel threatened and more likely to sting. If you need to move past a group of wasps, try to move slowly and calmly, without making sudden movements or noises. This will help to avoid attracting their attention and reduce the likelihood of being stung.