My kids are learning about colours just now and love asking us what happens if they mix two colours together. There's only so many times you can mix paint together before it all becomes brown though. So I made a little web tool to play around with mixing colours.
It's at /colour-mixer.html.
Quick one: if you need to use a web view in your app (we all love native UI, but it happens!), you can use Safari to debug it.
Here's the documentation, I found it really simple to set up and very helpful.
If you have a SFSafariViewController, integration is enabled by default. If you have a WKWebView you need to make it inspectable, and in most cases it's as simple as this:
myWKWebView.isInspectable = true