 Rachel Andrew Technical Writer [GitHub](https://github.com/rachelandrew) [LinkedIn](https://www.linkedin.com/in/rachelandrew) [Mastodon](https://front-end.social/@rachelandrew) [Bluesky](https://bsky.app/profile/rachelandrew.bsky.social) [Homepage](https://rachelandrew.co.uk)
Baseline is coming to [caniuse.com](https://caniuse.com)! In this post, learn
about the integration and discover some of the features that became part of
Baseline in 2023.
With the [new definition of Baseline](https://web.dev/blog/baseline-definition-update.md.txt), there
are two stages in a feature's lifecycle: when it becomes *newly available* , and
then when it becomes *widely available* after 30 months. A feature becomes part
of Baseline Newly available when it becomes interoperable in the following
browsers:
- Safari (macOS and iOS)
- Firefox (desktop and Android)
- Chrome (desktop and Android)
- Edge (desktop)
## Baseline lands on Can I Use
As the next step in clarifying feature availability, Baseline is beginning to
land on Can I Use from today. When visiting some pages on Can I Use, you'll see
a badge telling you whether the feature is in Baseline Widely available.
Features that are in Baseline Newly available will also show a badge, along with
the year that they became available. Anything that became interoperable across
the core browser set this year is part of *Baseline 2023*.
In the rest of this post, find out about the features that hit this milestone
during 2023. All of these features are
[Baseline 2023](https://web.dev/explore/baseline/2023)---newly available.
## Size container queries and container query units
Size [container queries](https://developer.mozilla.org/docs/Web/CSS/CSS_container_queries)
let you query the size of an element, in much the same way that media queries
let you query the size of the viewport. They make creating reusable components
much easier by letting you create components that react to the size of the area
they're placed in.
Browser Support
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[Source](https://developer.mozilla.org/docs/Web/CSS/Reference/Properties/container-type)
The design of the following card changes depending on the width of the component.
Learn more in [Container queries land in stable browsers](https://web.dev/blog/cq-stable.md.txt).
## New color spaces and functions
CSS now supports color spaces that let you access colors outside the sRGB gamut.
This means you can support HD (high definition) displays using colors from HD
gamuts.
### New color models
Now in Baseline, the color functions `lch()`, `lab()`, `oklch()`, and `oklab()`
give access to the LCH, Lab, OKLCH, and OKLab color models.
Browser Support
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[Source](https://developer.mozilla.org/docs/Web/CSS/Reference/Values/color_value/lch)
 Try out the new color spaces using [gradient.style](https://gradient.style).
### The `color-mix()` function
In addition, new color functions have become part of Baseline. The `color-mix()`
function enables mixing of one color into another, in any of the color spaces.
In the following CSS, 25% of blue is mixed into white, in the srgb color space.
```css
.example {
background-color: color-mix(in srgb, blue 25%, white);
}
```
Browser Support
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[Source](https://developer.mozilla.org/docs/Web/CSS/Reference/Values/color_value/color)
[Learn more about `color-mix()`](https://developer.chrome.com/blog/css-color-mix).
### The `color()` function
The [`color()`](https://developer.mozilla.org/docs/Web/CSS/color_value/color)
function can be used for any color space that specifies colors with R, G and B
channels. `color()` takes a color space parameter first, then a series of
channel values for RGB and optionally some alpha. You can use any of: `srgb`,
`srgb-linear`, `display-p3`, `a98-rgb`, `prophoto-rgb`, `rec2020`, `xyz`,
`xyz-d50`, and `xyz-d65`. For example:
```css
.valid-css-color-function-colors {
--srgb: color(srgb 1 1 1);
--srgb-linear: color(srgb-linear 100% 100% 100% / 50%);
--display-p3: color(display-p3 1 1 1);
--rec2020: color(rec2020 0 0 0);
--a98-rgb: color(a98-rgb 1 1 1 / 25%);
--prophoto: color(prophoto-rgb 0% 0% 0%);
--xyz: color(xyz 1 1 1);
}
```
The [CSS high definition color guide](https://developer.chrome.com/docs/css-ui/high-definition-css-color-guide)
gives you many more examples of the new color spaces and functions, along with
information about which to use when.
## Compression streams
The [Compression Streams API](https://developer.mozilla.org/docs/Web/API/Compression_Streams_API)
is a JavaScript API for compressing and decompressing streams of data. Apps
using this built-in compression no longer need to include a compression library.
Browser Support
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[Source](https://developer.mozilla.org/docs/Web/API/CompressionStream)
Learn more in [Compression streams are now supported in all browsers](https://web.dev/blog/compressionstreams.md.txt).
## Offscreen canvas
Before OffscreenCanvas, canvas drawing capabilities were tied to the `