How Genre Signaling Works
Readers scan covers for genre cues before they read a single word of the blurb: color palette, typography style, imagery, and composition all signal "romance," "thriller," or "literary fiction" almost instantly. Part of our design process is researching comparable titles in your genre so your cover fits reader expectations enough to be recognized, while still standing out within that category. A cover that looks nothing like its genre often gets scrolled past, even if the book itself is excellent, which is why genre research comes before a single concept is drawn.
This is also why we ask for comparable titles during the design brief. Seeing three or four books you'd consider similar to yours tells us more about tone and audience expectation than a written description alone usually can, and it helps avoid a costly first-round miss.
We also test concepts at reduced size before finalizing anything, since a design that looks striking on a full monitor can lose all of its detail once shrunk to a search-results thumbnail. Checking both sizes early avoids discovering the problem after the cover is already finished.