What can feel different?
With a Protan view, reds can feel darker and may sit closer to greens or browns. The degree of difference is personal.
Red–green family · 赤緑色覚異常・1型色覚（Protan）
Understanding a Protan view
A way of seeing where red-side brightness and separation can feel different.
Keeping it personal
Different ways of seeing color are not unusual. Protan is one of them; what matters most is that the same scene can read differently to different people.
One scene, different contrast
Notice the difference in a photo
This illustration is a way to talk about color difference. Each person’s lived view can be different.
Colors that can sit closer
- •red and green
- •deep red and brown
- •orange and olive
In everyday moments
- Position and shape, not only color, can be useful clues in signals.
- Ripe fruit and map markers may be harder to separate when they rely on red and green.
- A note written only in red can be easy to miss.
What someone nearby can do
Give color a few more clues
- Say the color name as well.
- Pair important signals with an icon, position, or pattern.
- Try translating a photo with NUNBIT when you want its contrast to carry further.