flutter - Flutter 的深色模式颜色

Question

在本站material.io它写道:

To create branded dark surfaces, overlay the primary brand color at a low opacity over the recommended dark theme surface color (#121212). The color #1F1B24 is the result of combining the dark theme surface color #121212 and the 8% Primary color.

我的问题是:

如何计算 8% 的颜色？

如何在 中实现这个覆盖的东西 flutter ?

Answer 1

不使用小部件的覆盖解决方案是使用 Color.alphaBlend哪一个

combine[s] the foreground color as a transparent color over top of a background color, and return[s] the resulting combined color.

你像这样使用它:

Color newColor = Color.alphaBlend(foregroundColor, backgroundColor);