Matching hair to eyebrows

Hi everyone! I’m thinking of doing a small change in my appearance for the summer. Currently my skin is very pale, I have light blue eyes, natural very black brows and my hair is a medium brown. There is a lot of old hairdye (both box and professional) in it, which is the reason I’m not able to bleach it any lighter. The medium brown color it has now is very similar to my natural color.
I’m debating between coloring my hair darker (like a 3), or lightening my brows and keeping the medium brown, since I don’t really like the current look. I’d like my brows to match my haircolor.
During summer my skin will tan a bit, but It’ll still be very light. I’m afraid having darker hair will make me look even more pale and ghostly, but lightening my eyebrows on the other hand will be very hard to mantain since they grow back so quick. What is your opinion?