Volodymyr Hrebnov

Wrong title of issue. Correct: "Wrong comparability with dir="rtl""

@chriseppstein , @xi is an author of library that implement some part of color functions for SASS, I think that for now (after some redesign) it can be useful as...

It doesn't help https://bugs.chromium.org/p/chromium/issues/detail?id=468153#c164

@Pinpickle The difference you are talking about is actually [_color difference_](https://en.wikipedia.org/wiki/Color_difference). Here some useful guide http://zschuessler.github.io/DeltaE/learn/