What is the default color of the dialog background fill?

Question

When Android AlertDialog shows, the background around this dialog becomes darker. This is probably achieved by first filling the whole screen with a half-transparent color and then putting a dialog on top of that.

My question is: what is the default color of that background fill?

#88666666 //looks close, but not enough

Answer 1

For future readers:

What question author calls dialog background fill is called Scrim in Material Design spec.

So the scrim color according to Material Design Spec is

Color : #000000

Opacity : 32%

    <color name="background">#52000000</color>

Answer 2

If you check the AppCompat's Dialog I believe it is using:

<color name="dim_foreground_disabled_material_dark">#80bebebe</color>
<color name="dim_foreground_disabled_material_light">#80323232</color>

However on my own testing I think it's #99000000 (black at 62 % opacity)