Every tool that lets you set a page colour makes a dark page look easy, and it is easy — right up to the point where someone prints it. The decision is really a decision about where the book will be read, and most of what follows is working out what each destination can tolerate.
Screen first, paper first
A PDF read on a screen is a lit surface. A dark page there is no different from a dark mode, and for a document read in the evening it can be the kinder option. A PDF sent to a printer is reflected light on paper, and everything reverses: the dark page becomes a solid block of ink that has to be laid down evenly across the whole sheet, and the text becomes a gap in it.
So the first question is not "would this look good dark" but "will anyone print it". If the honest answer is yes — a workbook, a manual, anything with blanks to fill in, anything going to a print-on-demand service — the page is white, or a cream, and the rest of this article is about covers and headings. If the honest answer is no, keep going.
Why print wants white
- Ink coverage. A white page with black text is a few per cent ink. A black page with white text is nearly a hundred per cent, on every page. On a home printer that is a cartridge a chapter; at a print service it is a surcharge and a longer drying time.
- Consistency. Large flat areas of colour show every variation in the print. A dark page that comes out slightly different on page 40 than on page 41 is visible from across the room. White paper has no such problem, because the paper is the colour.
- The gutter. In a bound book the inner edges curve into the spine and darken slightly. On a white page nobody notices. On a dark page the shadow reads as a printing fault.
- Thin type. White text on a dark ground is made of small gaps in the ink, and ink spreads slightly on paper. Serifs and hairlines close up. A face that is fine at 11pt on white needs to be bolder, or larger, in reverse.
- Reader expectation. People have read black-on-white for their whole lives. A printed book that departs from it is asking for a reason, and "it looked nice on screen" is not one.
Contrast, measured rather than guessed
On a screen, the question becomes whether the type is legible on the ground you have chosen, and that is measurable. Accessibility guidelines put the minimum contrast ratio for body text at 4.5 : 1, and 7 : 1 for the comfortable end. Pure white on pure black is 21 : 1, which is more than enough and is also harsh; the halo effect that makes white-on-black tiring to read for long stretches comes from the extremes, not from darkness itself.
The fix is to pull both ends in. A body colour around #D8D4CC — a warm off-white — on a ground around #14161A gives a ratio near 13 : 1, well clear of the minimum and much softer on the eye than full white on full black. That is roughly what a good dark mode does, and it is what the darker paper textures are tuned for.
| Ground | Body colour | Ratio | Verdict |
|---|---|---|---|
| #000000 | #FFFFFF | 21 : 1 | Legible, harsh over a chapter |
| #14161A | #D8D4CC | ~13 : 1 | Comfortable |
| #14161A | #9A9A9A | ~6 : 1 | Passable body, fine for captions |
| #1E2A3A | #C9D3E0 | ~10 : 1 | Comfortable, cooler |
| #2B2B2B | #6E6E6E | ~3 : 1 | Fails — too grey |
Any contrast checker will give you the number. Check the body colour, the title colour and the subtitle colour separately, because a title in a saturated accent — a red, a gold — often looks striking and fails the ratio, and it is the one you least want illegible.
Texture or flat colour
A flat dark rectangle behind text is the look of a slide, not a page. What makes a dark page read as *paper* is a faint texture: a grain, a slight unevenness, something the eye registers as a surface. It is subtle enough that a reader would not name it and strong enough that the page looks like an object.
That is the reasoning behind bundled paper textures rather than a colour picker. bukpress ships eight, and the names say where each sits — Paper and Cream for the light end, Ink and Midnight for the dark. The dark ones already have body and title colours that clear the ratios above; you can change them, but the starting point is legible.
If you use your own full-bleed image behind every page, which Essentials and above allow, the rule is that text needs somewhere quiet to sit. A photograph with detail across the whole frame will fight every paragraph. What works is an image that is mostly one tone — a dark gradient, a soft grain, a texture — with any detail kept to the edges where the margins are. Test it on the busiest page of the book, not the title page.
Making type work on a dark ground
- Go half a point larger. Light-on-dark type reads slightly smaller than the same size dark-on-light, because the letters are the gaps rather than the marks. 11pt becomes 11.5.
- Open the line height a touch. 1.45 rather than 1.4. Dense light text on a dark page turns into a texture faster than dark text on white.
- Avoid hairline faces. A high-contrast serif with thin strokes — the Didone family, Playfair at body size — loses its thins. Keep those for titles, at sizes where the thins survive.
- Warm the white. Pure #FFFFFF body text vibrates on a dark ground. Off-white is calmer and loses almost no contrast.
- One accent colour, for titles only. A muted gold or a desaturated blue for headings, checked against the ratio, and nothing else in colour. Two accents on a dark page look like a dashboard.
EPUB does not care what you chose
This is the part that catches people. A reflowable EPUB carries your typefaces, colours and heading styles, but the page is not yours — it belongs to the reading app. Kindle, Apple Books and Kobo each have their own light, sepia and dark themes, and the reader picks one. A background you set in the manuscript is either ignored or, worse, applied on top of the reader's dark theme so that dark text lands on a dark ground.
So a dark page is a PDF decision only. If the same book goes out as an EPUB — and it usually should — the EPUB gets your type and your heading colours and the reader's choice of paper. Design the PDF dark if that is right for it; do not expect the ebook to match, and do not fight the reader's theme. The cover is the one place your background survives into the EPUB, because the cover is an image.
A short decision
- Will anyone print it? Then white or cream. Stop here.
- Screen only? Pick a dark texture rather than a flat colour.
- Check body, title and subtitle colours against 4.5 : 1 at minimum, 7 : 1 to be comfortable.
- Set body type half a point larger and line height a touch more open than you would on white.
- Export the busiest page and read it for five minutes on a laptop at normal brightness. If your eyes are tired, warm the text colour or lift the ground a shade.
- Accept that the EPUB will be whatever the reader's app makes it.
The books that suit a dark page are the ones read at a desk: a guide, a report, a portfolio, a lead magnet. For a novel that someone will curl up with, or anything that might be printed, the white page has centuries of evidence behind it and needs no defending. The sample book is set on a light texture for exactly that reason.