The 5X display leans toward the "warm white" spectrum which is a little yellow. That's how the screen is as best as I can tell. The AMOLED displays are cooler or more blue. I saw a post on XDA forums suggesting that some 5X displays are more yellow than others, but the yellowing softens with use after a few weeks. My 5X is on the warmer side, but it looks good. I'm happy with it (compared to the AMOLED on my Samung S5).