Blue Mystery Book Cover Design (Evoking mystery and neutral)

Visuals: A dark silhouette of a girl standing under an expansive tree with intricate branches spreading across the cover, against a gradient sky transitioning from deep purple to a mysterious midnight blue. Shadows and light interplay subtly around the tree and girl, creating an enigmatic aura.

Typography: Use of an elegant, serif font for the book title "Only In The Shadows" in white, positioned prominently at the top center. The author's name, Abigail Shibu Thomas, is in a smaller, contrasting sans-serif font in soft gray at the bottom center.

Layout: The silhouette of the girl and tree dominates the center, with the title floating at the top. The author's name is subtly placed at the bottom, balancing the cover. The gradient sky serves as the dynamic background, enhancing the mystery theme.

Explanation: The visual composition leverages the silhouette under the tree to evoke a sense of intrigue, central to the mystery genre. The gradient sky adds depth and symbolizes twilight, a time traditionally associated with secrets and the unknown. The serif font for the title is chosen for its classic and refined look, drawing immediate attention and conveying timeless elegance. Meanwhile, the sans-serif font modernizes the author's name for contrast and readability. Embossing the title and silhouette enriches the tactile experience, engaging potential readers both visually and physically, while a matte finish prevents glare and maintains the enigmatic tone of the book's theme.