Hey..I just started learning compose...how can we set color in spacer.....I want to have a 30 dp space with white color....by default it is coming black color....it tried setting spacer.background(white) but not working....suggest any way to do so...thanx

This should work:

Spacer(modifier = Modifier
    .size(30.dp)
    .background(Color.White))

Yess @Foso it worked...thanx😊 I made a mistake i.e

modifier.background(white).
height(30.dp).fillmaxheight()

...while I should have done

fillmaxwidth....

due to this color was not coming....these little mistakes😅😅

Shouldn't Space be transparent by default? I think that if you want background, you should use Box instead.