[floriol]

I'm Hungarian and it's hard to describe the difference. Your examples are good indeed, before wine, blood and red carpet we exclusively use 'vörös', as well as for red headed people, but I'm not sure it is because a different colour (bit darker, saturated red. We also (in a slightly literatury way) say vérvörös, blood-red coloured, I think that's the colour I would associate the word with) or simply because they are almost fixed prefixes.

We also use 'bordó', to mean an even darker red (though for my not particularly "trained" eyes they are practically the same as vörös)