Hm... I get the blue hue when I set a number of colours to 4 or 5, while accuracy is set to 1 or 2. Still, you are right, the "accuracy" is not even a correct label here. This slider was in fact introduced for performance reasons, as I've been getting colours from images which were >10MB. Higher values on that slider will cause more calculation time, but still, would not certainly guarantee better accuracy. I'll probably rename it and provide the explanation. So thanks!
That is true, just checked. But, I wouldn't say that those colours you get are wrong. Sometimes you don't always get the most dominant ones. You can still get purple by bumping up the "accuracy" level up to 8 (which is not really "accuracy"). However, blue colour seems to appear only when palette size is set to 7. This is why I've introduced "fine tune" and "skip" features, to be able to tweak colours.
Right now I am using the RgbQuant library (https://www.npmjs.com/package/rgbquant), but I've been experimenting with neuqant-js as well. The Chrome extension you've mentioned before is really great!
Thank you! Right now, the only clear way to do this is by dragging a picture from another tab (as already mentioned @waldfee). But I'll think about adding an URL field as it might be more convenient!
I actually treat this small tool as a quick starting point for my design and development process. Sometimes, I just don't want to use precise colour pickers, but instead simply tweak sliders or drag pictures from a mood board.