Q: what can I wear with a navy blue blazer?
1. If you are a woman who is very confident in your looks and comfortable with brightly-colored pants, I recommend that you can combine your navy blue blazer with a white T-shirt and a pair of pink pants.
The inner T-shirt should be a deep v-neck or round neck T-shirt. It will make your outfit look better. And a pair of black shoes will go well with this combo.
2. If you always look good with skinny jeans, you can combine the blazer with a white blouse and grayish purple jeans.
A brown bag is okay to go with this outfit.
3. A gray T-shirt and blue jeans surely work well with the navy blue blazer. The inner T-shirt should be a deep v-neck T-shirt.