Color with alpha channel in Chromium 56.0 #RRGGBBAA not working?

Question

css

Colleagues, I welcome everyone.
I'm trying to use #RRGGBBAA in CSS in Chromium 56.0 - it doesn't work (they promised support from version 52).
I tested it with this: https://googlechrome.github.io/samples/css-alpha-c... - same thing.
What (where) is the problem? Is it true that while the alpha channel can only be set via rgba() for Chromium/Chrome? What is the best way to set color with alpha?
In advance, thanks to everyone.

Answer 1

Put like thisrgba(255, 255, 255, 0.6)