HSL color incorrectly translates to RGB color

[woodroof]

For example, hsl(230, 57%, 54%) should be translated to #475dcd, but usvg returns #465dcc.
r component value is 70.839, so it should be rounded to 71 (0x47).

[RazrFalcon]

I'm not sure I would call it "incorrectly". Just a different rounding to what you're expecting.
It's not a lossless operation to begin with.

[woodroof]

Maybe "incorrectly" is not a right word, but still usvg selects not a closest rgb color, and that can be improved.

[woodroof]

I can make a PR if you show me a place where this transformation is happening.

[RazrFalcon]

+/-1 difference is perfectly normal. But Chrome seems to be rounding up, so should we.
Will fix in the next update.