I have a weird behaviour right now with TopAppBar only when darkMode is enable. If `elevation = 0.dp...

# compose

[Lucien Guimaraes]

I have a weird behaviour right now with TopAppBar only when darkMode is enable. If elevation = 0.dp the background is correctly applied. If the elevation is by default, the background color is different (more bright). Is this an intended behaviour or a bug with beta01 ? Also it's only with the black color from Compose (Color.Black), I tried with other colors and it's working fine 🤷

[Lucien Guimaraes]

With elevation = 0dp

[Lucien Guimaraes]

Without specifying the elevation, so it's AppBarDefaults.TopAppBarElevation

[Albert Chang]

It is the material design specification.
https://material.io/design/color/dark-theme.html#properties

The higher a surface's elevation (raising it closer to an implied light source), the lighter that surface becomes. That lightness is expressed through the application of a semi-transparent overlay using the On Surface color.

[Lucien Guimaraes]

Ah that's why

[Lucien Guimaraes]

thanks!

[Andrey Kulikov]

https://developer.android.com/reference/kotlin/androidx/compose/material/ElevationOverlay

[Lucien Guimaraes]

Thanks @Andrey Kulikov 👍