By Andrea Steinbauer While visiting an exhibition on storytelling in Old German and Old Dutch art, I noticed most of the paintings on display had one thing in common: the use of the color blue. This realization inspired me to dig deeper into why this primary color is so special.   In color psychology, blue stands for harmony and happiness. According to scientific studies, it has a calming effect on the human nervous system and can help to reduce stress. In rooms, blue creates