Very nice! I've never thought to use a purple-ish hue for an ocean color, but it looks amazing! Really digging the tones used here in general.

One thing I notice, is that the part of the lineart is super thick compared to other parts. For the coastline it's not bad, but for the mountains it looks a little too inconsistent with the other features for my taste. The finer cities and forests look really awesome, and I bet they would benefit from having the mountains go with them a little better. Other than that, a fine map! I hope it serves you and your players well.