The choice of colormaps for data visualization can affect the information accessible to color-blind users. For example large patches of cyan in an image with a bitonal cyan-magenta colormap (Matlab's "cool") might become invisible to Protanopes if displayed on white background.
Vlad Atanasiu (2020). Matlab colormaps as seen by color-blind users (https://www.mathworks.com/matlabcentral/fileexchange/30161-matlab-colormaps-as-seen-by-color-blind-users), MATLAB Central File Exchange. Retrieved .