Best monitor for game development and game art?

I’m trying to decide which monitor is better for game development and gaming. I have decided between LG 27UK650-W and the ASUS ROG Swift PG279QZ. Now, which is more important? 4K and 100% color accuracy or 2K and high refresh rate with pretty good color accuracy? Does 8-bit and 10-bit color matter for game development? What about concept art and texture making?