Colours are amazing and it's so high resolution that I can't even see the pixels anymore. I use it primarily for gaming. Had a 1440p 144hz display and was worried the change would be a downgrade, but now I can safely say I'd take 4k with HDR over the higher refresh rate any day. To be fair though, I don't play competitively. A more expensive display with a high refresh will likely be necessary if you are a competitive gamer.