Nighttime blurry lighting design refers to the artistic use of lighting to create a soft, dreamy effect in urban or architectural environments at night. This technique often involves the use of low-intensity lights to create a sense of depth and movement. It is commonly used in public spaces, parks, and buildings to enhance ambiance and safety. The design principles include the careful placement of lights, the use of color to evoke emotions, and the control of light spill to minimize glare.