What color leggings goes with a beige solid sweater and blue 574 New Balance?

In fact, both black and dark gray are acceptable. Relatively speaking, dark gray is more fashionable. Of course, sometimes you have to consider the material of your leggings to avoid the feeling of swelling. Although the ones below are not all leggings and blue shoes, this style should be considered.

This may be similar to the type you mentioned, a loose sweater on the upper body, casual and relaxed, and slim-fitting trousers or leggings on the lower body.

It is recommended to wear ankle-length leggings as shown in the picture. Expose a little ankle, which will make you look slender than the foot-stepping style. Of course, if you are worried about the weather, you can add a pair of socks. In short, there is a little change on the ankles to avoid looking too ordinary and tacky.

Send a few cute pictures for reference.