I’m currently testing this calendar to see if it can replace the app i’m using. I’ve use several apps, and all of them had this feature. I do time blocking on my calendar, and i usually put those blocks in a very light color to distinguish them from my real appointements. And i always use the same colors for similar topics in all my apps. I’m a very visual personn, and not been able to do that complicates a lot my organisation process.

I use calendar colors "semantically", such that the color of a calendar and its events tells me something about it (type, priority, etc). The built-in colors for Proton Calendar are utterly useless to me in this regard. I also find that the pastel colors blend in the Android app's month view, making events difficult to distinguish with a quick glance. Google's colors leave a lot to be desired, but they're miles better than Proton Calendar. Until I began using Proton Calendar, I hadn't realized how much I rely on the color "semantics" to make information stand out from the jumble of events.

I really don't understand how someone puts in the work to add calendar colors, but then nerfs the feature by hard coding just 5 basic color groups, with 4 largely indistinguishable variations of each. Just add a color wheel!

Totally agree! Would be beneficial have the hex code option

The fact that this isn't implemented by default is shameful. Pretty much any other calendar app has this feature, or at least offers a wider range of colors than Proton. As someone who has to have several calendars sync'd for work etc., it's very difficult to visually distinguish them with the current choice of colors, not to mention it looks hideous. I'm considering going back to Google Calendar just for this, I don't understand why such a basic feature isn't available.

Seriously? Other more established calendar applications don't even do anything like that. I'm sure the developers have many other actual value-adding features to consider before this exorbitant 'nice-to-have'.