android custom shape as background drawable

I am trying to draw the blue shape below. I want my dialog to have this custom blue shape. But I can not figure out. I have tried the below code.

I really appreciate your tips, Thanks

<item>
    <rotate
        android:fromDegrees="0"
        android:pivotX="50%"
        android:pivotY="50%"
        android:toDegrees="0">
        <shape android:shape="rectangle">
            <solid android:color="@color/red_color" />
        </shape>
    </rotate>

</item>

<item>
    <rotate
        android:fromDegrees="-10"
        android:pivotX="50%"
        android:pivotY="50%"
        android:toDegrees="-10">
        <shape android:shape="rectangle">
            <solid android:color="@color/gray_color" />
        </shape>
    </rotate>
</item>

To show the inclination