There are five main patterns of innate color vision. Each has different color schemes that are easy to distinguish and different degrees of discrimination.

It is important that educational materials take into account the diversity of color vision and incorporate designs that can be easily communicated to a wide audience (Color Universal Design, CUD).
Reference: NPO Color Universal Design Organization [https://cudo.jp/]

・Color Universal Design Guidelines
Currently, many local governments and companies have created CUD guidelines, and we will introduce Kawasaki City's color universal design guidelines as an example.
There are also clear explanations on color schemes and the creation of graphic materials such as graphs and maps.
Kawasaki-City: About formulation of a Calla universal design guideline in official documents making. (j-server.com)
(Retrieved 2024.9.24, Japanese language only）

・Simulation of the "visibility" of educational materials
Several PC software and smartphone apps can monitor vision by color vision characteristics.
Example: "Chromatic Vision Simulator" [https://asada.website/cvsimulator/e/index.html]