[Abhishek R]

Agreeing with what the others said about contrast and visibility, a good way to start with making a logo is to just take your team number and throw it around in a few fonts (preferably easy to read but bold/block lettering) and then see what kind of designs you can spring off of that.

Additionally, it helps to have the same font family used for both the name and the numbers, otherwise you will have a slight inconvenience when creating team documents because you'll have to deal with two different fonts (doable, we use two different fonts, just something to take into consideration).