Polka dots are a pattern consisting of evenly spaced, round dots that can vary in size. They are often found on fabrics, wallpapers, and various decorative items. The dots can be of different colors, but they are typically set against a contrasting background, such as white or black, to enhance visibility. This pattern has been popular in fashion and design since the late 19th century. It is commonly associated with playful and whimsical styles, often seen in clothing, accessories, and even children's toys. The versatility of polka dots allows them to be used in both casual and formal settings.