Technology
One color, and the discipline to never break it
We shipped 40 screens this quarter without adding a single new hue. Here is what that constraint actually bought us.
When I joined the design team in São Paulo two years ago, the first thing my lead told me was the rule that runs the whole brand: purple must always be present. Not "use purple where it helps." Present. On every screen, in every state, no exceptions.
It sounded like a slogan until I tried to break it. I spent two weeks last winter rewriting our onboarding flow and quietly slipped a soft grey panel behind a form, the kind every fintech ships. It tested fine. It also looked like every other app on the phone, and that was the whole problem.
Constraint is a faster decision than taste
A single ground color removes a hundred small arguments. Nobody debates the card background, the empty-state tint, or which accent the chart should use — there is one violet field and white type on top of it. The team ships faster because the palette already decided.
The fewer colors you allow yourself, the louder the one you keep becomes.