Probably 15-20 years ago, my oldest brother gave me a handful of graphic novels in a series (I don't know if they were originally released as comic books, or were directly put in books). It was set in a fantasy world, about medieval levels of tech, with magic. The first main character we're introduced to is a red or brown haired boy, probably young teen at most, caucasian skin. I think he's introduced escaping from a sailing ship where he was basically an indentured servant as the cabin boy. He identifies as a hero or maybe as a great thief. Then, there's a dark-haired girl (a princess?), also pale-skinned, who he runs into, and I think perhaps rescues her (although she's competent in her own right, and a bit of a tomboy) during a palace coup? The third person is a wizard, maybe early 20s. He's supposed to be extremely powerful in magic, but seldom demonstrates those skills. I think he's one of the teachers to the girl, maybe from his house out in the woods? I remember one of his demonstrations of skill involved vanishing something from a washtub. I think his name may have started with a Q, maybe Quentin? Their primary antagonist is a dark-haired woman (maybe 20s to 30s) who wields a dark sword, usually one-handed.
I think I had 3-4 volumes, and over the course of events, we learn that the woman with the sword is not as villainous as initially portrayed, and actually may be a future version of the young girl. Similarly, I remember it as being implied that Quentin is the future version of the young boy, although I don't recall exactly how it all worked out. I think there were some other monstrous races in the world, although I don't recall many "humanoid fantasty races" like elves, dwarves, etc. The art style was simple, non-realistic. People were fairly normal proportions, not exaggerated. My memories have the comic in color, although I might be misremembering that.