bad contrast in darkmode when using Lumo theme warning text

[McPringle]

Describe the bug

Since Vaadin 24.1 there are colors for warning text in the Lumo theme:
https://vaadin.com/docs/latest/styling/lumo/lumo-style-properties/color#warning

In my application I use --lumo-warning-color (strong warning background color) as the background and --lumo-warning-text-color (warning color with sufficient contrast for text). At least that is how I interprete the color rules from the page mentioned above.

These work fine in light mode:

But in dark mode the contrast is really bad:

I would expect the warning text color of the Lumo theme to work better with the warning background color. For visually handicaped people this is a problem.

Btw: Unfortunately, the warning colors are missing in the Lumo Editor.

Expected-behavior

In dark mode, the warning text color should have a much better contrast to the warning background color.

Reproduction

Use any Vaadin application with the Lumo theme and a warning text on the warning background color. Switch to dark mode. I created a simple demo application with one view, a warning message, and a theme toggle:

https://git.fihlon.swiss/McPringle/lumo-warning-colors

System Info

Linux 6.14.0, Vaadin 24.9.0, Firefox 143.0.1