How to find coloring book niches on KDP

Coloring books are one of the most visual formats on KDP, and that changes how you research them. Buyers judge the book almost entirely by the cover and the sample pages. A good niche with average art will struggle; a modest niche with great art can do well.

So a coloring book niche is worth pursuing when three things line up: a specific audience, a theme that audience cares about, and a style you can deliver at a higher standard than the books already ranking. Here is how to find and test those combinations.

Pick the audience first

Coloring books split cleanly by who is holding the pencils, and each group shops differently.

• Toddlers and preschoolers: thick lines, big simple shapes, one image per page. Parents buy these.

• Kids roughly 4-8 and 8-12: more detail as age goes up, popular themes like animals, vehicles and fantasy creatures.

• Teens: trend-driven styles, often overlapping with adult books.

• Adults: detailed patterns, relaxing scenes, humor, and hobby themes. Many adults buy for themselves.

• Seniors: large, clear designs with less fine detail, sometimes marketed as easy or bold-line books.

Write the audience into the niche name from the start. “Dinosaur coloring book for toddlers” and “dinosaur coloring book for adults” are different products with different competitors.

Add a theme and a style

Theme is what the pictures show. Style is how they are drawn. Combining them gives you a niche that is easy to describe and easier to stand out in.

Theme ideas:

• Hobbies: gardening, fishing, knitting, camping, baking

• Animals: a single species often works better than “animals” in general (axolotls, highland cows, cats in cafes)

• Places and seasons: cozy cabins, coastal towns, autumn, holidays

• Occupations: nurses, teachers, firefighters

• Humor: sarcastic quotes, funny animals (watch for anything offensive or brand-related)

Style ideas:

• Bold and easy, with thick lines and little detail

• Highly detailed mandala or pattern work

• Cozy, cute or kawaii

• Realistic illustration

• Stained-glass or geometric

A combination like “bold and easy cozy cottage coloring book for adults” tells a buyer exactly what they are getting.

Check demand and competition

Run the same checks for every candidate:

1. Amazon autocomplete: type your phrase into the Amazon search bar. If it or something close appears, people search for it.

2. Best Sellers Rank: open the top 5-10 results and check BSR under “Product details.” As a rough guide, below about 50,000 is usually crowded by big publishers and ads, roughly 100,000-300,000 often means steady modest sales, and above about 1,000,000 suggests few buyers.

3. Reviews: if most top books have under about 50 reviews, there may be room. If every top book has 500 or more, look for a narrower angle.

For coloring books, add a fourth check: art quality. Look at the sample pages and read the 2- and 3-star reviews. Common complaints are blurry or pixelated lines, repeated images, pages that are too busy or too simple for the stated age, and bleed-through because the images are printed on both sides of the page. Each of these is a chance to do better.

To speed up the first pass, you can type a broad interest such as “cats” into NicheFlow and compare the sub-niches it suggests by Competition and Profit score (1 to 10), alongside AI-estimated BSR and review figures. Then check the art quality and reviews of the top books yourself, since that is where coloring niches are usually won or lost.

Get the production details right

Coloring book buyers notice small production choices.

• Single-sided images: many publishers print each design on one side with a blank back, so markers do not ruin the next picture. Buyers often mention this in reviews.

• Line quality: use clean, high-resolution line art. Check KDP’s current file requirements for print resolution.

• Trim size: larger trims such as 8.5 x 11 inches are common for coloring books, since they give room to color.

• Interior ink: most coloring books use a black ink interior. You do not need a color interior for the pages people color.

• Page count and price: KDP paperback royalties on Amazon.com marketplaces are 60% of list price minus printing costs. Single-sided printing doubles your page count, so check KDP’s pricing calculator before setting your price.

Be careful with copyright and trademarks

Coloring books are especially prone to rights problems. Characters from films, games and cartoons are protected, and so are many brand names and logos. Even “inspired by” versions can get a book removed.

Stick to original characters and generic themes. If you use art you did not create, make sure your license covers commercial use in printed books. Before publishing, search the USPTO trademark database for title keywords and review Amazon’s content guidelines. This is general information, not legal advice.

Build around what works

If one coloring book gains traction, the same audience will often buy related titles. A “cozy cottage” book can lead to “cozy cafe” and “cozy winter” editions in the same style. Keep the cover design consistent so the books look like a set, and say clearly on each cover who it is for and how many designs it includes.

Quick checklist

• Clear audience and age range in the niche name

• A specific theme plus a defined style

• Autocomplete shows real searches

• Top books in a workable BSR range with modest review counts

• You have studied sample pages and low-star reviews

• Original art, or art licensed for commercial print use

• Production plan covers single-sided pages, line quality and trim size

• Price checked against page count

FAQ

Are coloring books too competitive on KDP?

Broad coloring books (“animal coloring book”) are crowded. Narrow combinations of audience, theme and style still have room, especially where existing books have weak art or clear complaints in their reviews.

Can I use AI-generated art for coloring books?

Some publishers do, but quality varies, and buyers often complain about messy or distorted lines. KDP also has disclosure rules about AI-generated content. Check KDP’s current content guidelines before publishing, and review every page by hand.

How many pages should a coloring book have?

There is no fixed rule. Look at what the top books in your niche offer and what buyers say about it in reviews. Then balance the number of designs against printing costs, since single-sided pages add up quickly.