Translation of "Darker" in Chinese

It's getting darker and darker.

越来越黑了。

The sky grew darker and darker.

天空变得越来越暗了。

The clouds are getting darker.

雲越來越黑。

- The sky turned dark.
- The sky's getting darker.

天暗了下来。

This color is a bit darker than that one.

这种颜色比那种稍微深一点。

The clouds are getting darker; it's going to rain.

天陰了，要下雨了。