I'm working on a color picker that's better than any color picker you've ever used. Mostly because it uses the HCL color model that allows you to pick colors that are a different color, but appear at the same brightness to the eye.
It's super unfinished, but if you want to play around with the alpha, it's up here:
https://color.wisehodl.dev
I'm currently working on porting the color engine to Rust and using WASM to bind it back to the app. Then I want to add the ability to create your own color palettes with Nostr.