UI: Poor color contrast for Calendar View in Dark Mode

[RoyLee1224]

Apache Airflow version

3.0.6

If "Other Airflow 2 version" selected, which one?

No response

What happened?

In the Dags calendar view, the darkest shades of the color gradient are difficult to see and distinguish in dark mode. I'm working on it.

ScreenShots

What you think should happen instead?

No response

How to reproduce

1. Enable Dark Mode in the Airflow UI.
2. Navigate to the calendar view for any DAG.
3. Toggle between "Total Runs" and "Failed Runs".
4. Observe the legend and the calendar cells. The darkest colors are barely visible.

Operating System

mac

Versions of Apache Airflow Providers

No response

Deployment

Official Apache Airflow Helm Chart

Deployment details

No response

Anything else?

No response

Are you willing to submit PR?

• Yes I am willing to submit a PR!

Code of Conduct

• I agree to follow this project's Code of Conduct

[odaneau-astro]

Should be addressed by #53981

[RoyLee1224]

Looks good, I'll test the new theme.ts locally and see if it solve the problem

[RoyLee1224]

@odaneau-astro LGTM, thaks for the fix