@Zerosquare said in Unreal claims concerning purple: the way color differences are usually computed in perceptual color space is wrong. For small differences, it doesn't matter much, but for larger differences, it does. And this notion of smaller and larger is pretty fucky. We (I) had to switch colorspace models for image preprocessing because of tinted glassware tints not looking right, one time. The difference, iirc, was stark and hard-to-describe, likely because the tint was primarily red but contained some elements of blue as well. what's with the pink circle?