Alan confirmed that his name is Dark Blue and/or Royal Blue, the name "Navy" is a conjectural name that a user on this wiki made to differentiate Tutorial Blue and Dark Blue.

^ok then his name is Dark/Royal Blue

Also, was Wristband of Power ever confirmed as a name for the vira-band?

Alan said on Patreon: "The Dark Lord's Wristband of Power, which makes him immune to laser beams"

^Okay. So I guess we should update the article? @Darkness12128

Ir has already been updated.

Alan also uses the name Navy.

So it is official now?

Yes

Awesome! So is Navy the canon name of Purple's dad?

Well, all of them are. Alan has just used Navy more I think