---
title: "Opacity"
---
<!-- DO NOT EDIT! This file was auto-generated by crates/build/re_types_builder/src/codegen/docs/website.rs -->

Degree of transparency ranging from 0.0 (fully transparent) to 1.0 (fully opaque).

The final opacity value may be a result of multiplication with alpha values as specified by other color sources.
Unless otherwise specified, the default value is 1.

## Rerun datatype
[`Float32`](../datatypes/float32.md)


## Arrow datatype
```
Float32
```

## API reference links
 * 🌊 [C++ API docs for `Opacity`](https://ref.rerun.io/docs/cpp/stable/structrerun_1_1components_1_1Opacity.html)
 * 🐍 [Python API docs for `Opacity`](https://ref.rerun.io/docs/python/stable/common/components#rerun.components.Opacity)
 * 🦀 [Rust API docs for `Opacity`](https://docs.rs/rerun/latest/rerun/components/struct.Opacity.html)


## Used by

* [`EncodedImage`](../archetypes/encoded_image.md)
* [`GridMap`](../archetypes/grid_map.md)
* [`Image`](../archetypes/image.md)
* [`SegmentationImage`](../archetypes/segmentation_image.md)
* [`VideoFrameReference`](../archetypes/video_frame_reference.md)
* [`VideoStream`](../archetypes/video_stream.md)
* [`VoxelGridMap`](../archetypes/voxel_grid_map.md)
