[Dark modes] New blue color

[areox-net]

Your use case

Improve the contrast of the Tchap Blue color in dark modes (Sombre and Noir).
We can use the following color all across the app. it should work both as big boxes background and as small text on dark background:

#3377FF

A more detail ticket about dark modes will follow if needed.

Here is a preview

Have you considered any alternatives?

No response

Additional context

No response

[NicolasBuquet]

Previous color:

New color: