SIGN: a perceptible indication of something not immediately apparent.
INDEX: Something that serves to guide, point out, or otherwise facilitate reference.
SYMBOL: Something that represents something else by association, resemblance, or convention, especially a material object used to represent something invisible.
What makes a successful bookjacket?
A successful bookjacket is one that will engage the reader and will make someone want to pick up the book to read it. It must have a clear hierarchy and is interesting.
While researching bookjackets, I found many that are well designed. Here are 3 examples of bookjackets I think are designed well.
This bookjacket is well designed because it has a limited color palette. It is clear what the title is and the simple imagery is a nice addition.
I responded to the energy and style of this cover. I like the color palette and the font found on the cover.
I enjoy the negative space and the bold colors used on this cover. It is successful because the angled type and shapes highlight the important text.