How to fix "RGB or color content found in a black and white interior"
Updated October 31, 2026 · IngramSpark · Amazon KDP
Your pages look black and white on screen, yet the printer says there's color in them. Here's why, and the quick way out.
The error: “RGB / color content found in a black & white interior”
RGB / color content found in a black & white interior
Paraphrased from IngramSpark rejection emails.
Other ways people search for this error
- “RGB images found in black and white interior”
- “Color found in a grayscale interior”
- “Convert interior to grayscale”
Quick fix: SparkPrep scans your cover and interior against the exact platform rules, pinpoints the issue, and fixes it for you with one click.
Why you get “RGB / color content found in a black & white interior”
A black and white book is printed with black ink only. But most programs save "black" text as RGB, which is a screen color made of red, green and blue light. When the printer converts it, that black turns into a mix of several inks. A colored logo, a blue link or a color photo does the same.
Printers reject it because colored ink can't go on a black-only press, and because mixed black can push total ink over the limit.
How to fix “RGB / color content found in a black & white interior” manually (the hard way)
If you want to try adjusting the files yourself, here are the steps you need to follow:
- Open your original manuscript.
- Set all text to plain black and convert every picture to grayscale.
- Remove any colored links, logos or highlights (blue hyperlinks are a common one).
- Re-export as PDF/X-1a:2001, or in Acrobat Pro use Print Production → Convert Colors → Grayscale.
- Re-upload it to your printer and wait for the file review again. If it fails, you start over.
Step by step in your app
Adobe Acrobat Pro (fastest)
- Tools → Print Production → Convert Colors.
- Set Conversion Profile to a grayscale profile (for example Dot Gain 15% or Gray Gamma 2.2).
- Tick Convert Colors to Output Intent if shown, then OK, and save as a new PDF.
Adobe InDesign
- Make text swatches 100% Black (C0 M0 Y0 K100).
- File → Export → Adobe PDF (Print) → Output: Color Conversion: Convert to Destination, Destination: a Gray profile.
Microsoft Word
- Set all text to Automatic or pure black.
- Change pictures to grayscale: select the picture → Picture Format → Color → Grayscale.
- Then convert the saved PDF to grayscale in Acrobat, since Word can't export a grayscale PDF on its own.
You can fix this by hand with the steps above. Or drop your file into SparkPrep and let it find the problem and fix it for you, in minutes. Try it on your file.
How to fix it instantly (the SparkPrep way)
If you don't have expensive design software, or you just want to get your book published without the headache, let SparkPrep handle it.
SparkPrep was built by a self-published author whose own book was rejected 18 times. It checks your files against the exact print rules Amazon KDP, IngramSpark, Barnes & Noble Press and Lulu publish.
When you upload your file to SparkPrep:
- We automatically scan for page size, bleed, spine width, safety margins, ink coverage and embedded fonts.
- We explain any hidden errors in plain English.
- We fix what can be fixed automatically, tell you exactly what's left, and export a print-ready PDF/X-1a, checked again before you download it.
Stop fighting the bots. Drop your file into SparkPrep today and get back to marketing your book!
Make my interior black and whiteWhat it costs to get this fixed
| Hire a professional cover designer and interior formatter | SparkPrep | |
|---|---|---|
| Price | About $930 for the cover plus about $800 for the inside pages: around $1,730 | One price per book for the cover, the inside pages, or both |
| Time | Book a freelancer, wait for their schedule, then go back and forth on changes | Upload and get your fixed, print-ready files in minutes |
| Printer check | Depends on the freelancer | Checked against your printer's own rules, every time |
Freelancer prices are Reedsy's own published figures (source). A great designer is worth it for original artwork. If you just need your files right for the printer, you don't need to pay designer prices.
Quick answers
Why does my black text count as color?
Most programs save black as RGB, a screen color. When it's printed it becomes a mix of several inks, so the printer sees color in a black and white book.
How do I convert a PDF to grayscale?
In Adobe Acrobat Pro, open Print Production, Convert Colors, and choose a grayscale profile such as Dot Gain 15 percent.
More guides
- RGB vs CMYK for book covers: what printers want and how to convert
- How to fix "ink coverage exceeds 240%" (IngramSpark)
- How to fix low-resolution (under 300 DPI) images in your book
- How to fix "PDF contains transparency or layers"
- All guides
SparkPrep is an independent tool and is not affiliated with Amazon KDP, IngramSpark, Barnes & Noble Press or Lulu.