White text on a black background
transparent-rgba-diagram
https://material-design.storage.googleapis.com/publish/material_v_4/material_ext_publish/0Bzhp5Z4wHba3Z21kckdVNjFiN2c/style_color_uiapplication_alpha1.png
In a design app, when we place a black and white boxes over a bigger box with a blue background color (As in the example), the result will be a lighter and ...
Black Background Rgba