---
title: "appearance"
description: "A modifier that allows drawing a background, border, foreground, and shadows with a single modifier."
type: "modifier"
lastmod: "2026-09-24"
---
## API Reference

### appearance

> Source set: Common

```kotlin
public fun Modifier.appearance(block: AppearanceScope.() -> Unit): Modifier
```

A modifier that allows drawing a background, border, foreground, and shadows with a single
modifier. The values to use are in a callback that is invoked in the drawing phase and, if it
reads mutable state, will only invalidate drawing.

If any mutable state, animations or style properties read in `block` change `block` to be called
again and update the appearance.

NOTE: `block` can be invoked multiple times, which is why it's important for performance to
minimize work done inside of it. `block` may also be invoked before effects.

#### Parameters

| | |
| --- | --- |
| block | the block used to determine what this modifier draws. |