I wear a #18 but my real color is #17 but I pull it off well and summertime is upon us.. You look like in between those two colors...In the light you look like you have some blondish highlights. I would go #18 because if you expose your natural hair peoples hair is usually darker on the sides and back.
These colors should be used as a guideline as colors vary due to the digitizing process and differences in computer monitors. Toplace uses the new image mens hair color chart (says so on the hair piece tips tab). Regards
Oh, it seems to be small. Just google new image chart & look at images.