# Objective

Make hsla functions `const`.

## Solution

Made Hsla-related functions `const fn`.

## Testing

> Did you test these changes? If so, how?

Ran `cargo test -p gpui color` to verify the color-related tests pass.

> Are there any parts that need more testing?

No additional testing is required since this change only changes
existing color functions to `const fn`.

> How can other people (reviewers) test your changes? Is there anything
specific they need to know?
 
Reviewers can run `cargo test -p gpui color` to verify the changes.

> If relevant, what platforms did you test these changes on, and are
there any important ones you can't test?

Tested on macOS. No platform-specific behavior is expected.

## Self-Review Checklist:

- [x] I've reviewed my own diff for quality, security, and reliability
- [x] Unsafe blocks (if any) have justifying comments
- [x] The content adheres to Zed's UI standards
([UX/UI](https://github.com/zed-industries/zed/blob/main/CONTRIBUTING.md#uiux-checklist)
and
[icon](https://github.com/zed-industries/zed/blob/main/crates/icons/README.md)
guidelines)
- [x] Tests cover the new/changed behavior
- [x] Performance impact has been considered and is acceptable

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Release Notes:

- N/A