Color System for Productivity Tool

The overall color system is really cool.

I like the differentiation between pure and base white / black.

Keep in mind that shadows in the real world are rarely a pure grey / black but usually have a litte tint. It's not necessary but it can create a more natural look and also create a certain feeling, as long as you are not overshoot it.

I really enjoyed the system color section :D

You could also add a matrix which is telling the system user how the colors could be combined in which context, e. g. you could use some colors in headlines but not in normal text if you want to achieve a AAA WCAG rating.

Besides that add some shades of each color, a small graphic which shows how all the colors should be in balance to each other and maybe use different names and show rgb values in addition to hex colors.

Also the following text helped me a long time ago, it's from the creators of tailwind:

https://www.refactoringui.com/previews/building-your-color-palette