Enhancing Report Accessibility for Color-Blind Users in Power BI

Hi, marianoraioa 

I am glad to help you.

One approach to the contrast issue is to choose colors with the highest possible contrast and avoid sometimes fancy but low-contrast combinations, such as dark gray on top of light gray. 

You can also change the theme. For example, Power BI already offers a high-contrast theme by default and a theme for color-blind people: 

Avoid using color alone to convey information. For example, you can use patterns, textures, or shapes to differentiate between different data 

Here are some official documents and Blogs that others have shared in the community to help you: 

Create stunning and more accessible reports in minutes with our new color themes! | Blog de Microsoft Power BI | Microsoft Power BI 

Reporting for Everyone – Create accessible Power B... - Microsoft Fabric Community 

Creating accessible reports in Power BI - Power BI | Microsoft Learn 

I hope my suggestions give you good ideas, if you have any more questions, please clarify in a follow-up reply.
Best Regards,
Fen Ling,
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