"Make ours dark, it looks stylish" — I hear it all the time. Sometimes I agree, sometimes I refuse. Because a theme isn't about style — it's about who you sell to and what. Let's sort it without taste debates.
When a dark theme works
A tech product or studio. A dark background reads as "engineering" — that's why IT brands pick it. Our own site is dark for exactly this reason.
Premium and visual products. Photos and graphics "glow" on dark — portfolios, architecture, cars win.
Evening usage context. Entertainment, events, gaming — the audience scrolls at night, and dark is easier on the eyes.
When light is the only right choice
Healthcare and anywhere trust is the product. Light equals cleanliness and openness. A dark clinic quietly unsettles — which is why we build medical sites light, even though we live in a dark theme ourselves.
A 50+ audience. Contrast sensitivity drops with age: light text on dark gets harder to read. If your patient or buyer is older — don't fight their eyes.
Long-form text. Blogs, documentation, catalogues with descriptions — long reading on dark tires faster.
Print and offline pairing. If the site extends brochures, menus and price lists, a light theme keeps the set coherent.
Whatever the theme: contrast and accessibility
The real mistake isn't "dark or light" — it's grey text on grey. A minimum 4.5:1 contrast for body text (the WCAG standard) isn't bureaucracy; it's the difference between "read it" and "closed it". Dark themes have their own trap: pure white on pure black "rings" — softer tones read better.
What about a toggle?
Possible — we build them. But honestly: a toggle doubles design testing, because every screen, illustration and chart must work in both themes. For content sites and products it's justified; for a services site it usually isn't. One theme, executed flawlessly, beats two done halfway.
Choose in 4 questions
- Who do you sell to? 50+ or healthcare/finance → light
- What do you show? Lots of photos and visuals → dark can work
- How much do they read? Long-form → light
- What's the brand? Tech/premium → dark works for you
These considerations are part of a wider conversation about trust in design: what builds trust on medical websites and 9 moves that lifted conversion.