If it is purple, the best match inside is a milky white dress, or a light and unobtrusive color. Don't match a thick line dress. Try to choose T-shirts or sweaters with high knitting density. As for pants, don't be too dark. Don't be too light, it's best to jump into jeans of moderate color. If you want to show your sense of value better, go to a women's clothing store and choose some plain colors. In short, the color of the clothes inside should not jump too much and should not be darker than the coat. Pants match very well. If you really don't know how to match, choose a pair of jeans with a lighter color.