Alert: Error encountered while attempting to locate the Angular Material core theme within Angular 3, Angular Material, and Angular Material Experimental

After successfully implementing a custom color palette with Material 3 and Angular Material Experimental, I am encountering a warning in the console stating "Could not find Angular Material core theme. Most Material components may not work as expected. For more info refer to the theming guide".

Here is an example of what I have done, although it is not my actual code, the same warning message persists when implementing this.

@use '@angular/material' as mat;
@use '@angular/material-experimental' as matx;

$m3-dark-theme: matx.define-theme((
  color: (
    theme-type: dark,
    primary: matx.$m3-green-palette,
    tertiary: matx.$m3-blue-palette,
  )
));

$m3-light-theme: matx.define-theme((
  color: (
    primary: matx.m3-$green-palette,
    tertiary: matx.$m3-blue-palette,
    )
));

@include mat.core();

.dark-theme {
  @include mat.all-component-themes($m3-dark-theme);
}

.light-theme {
  @include mat.all-component-themes($m3-light-theme);
}

I am hopeful that the warning message will no longer appear in the console after making the necessary adjustments.

Answer №1

The design is currently using the $m3-indigo-palette, which is not a valid palette option. To resolve this, please select one of the palettes listed below:

components/guides/theming.md:97

- `$red-palette`
- `$green-palette`
- `$blue-palette`
- `$yellow-palette`
- `$cyan-palette`
- `$magenta-palette`
- `$orange-palette`
- `$chartreuse-palette`
- `$spring-green-palette`
- `$azure-palette`
- `$violet-palette`
- `$rose-palette`

If you prefer to use the $indigo-palette, please refer to the Github issue on the Angular page for more information, as there may be limited details in the Angular documentation.

Github Feature Request

I am facing difficulties in combining styles from m2 with the m3 theme, resulting in the output not meeting my expectations.

Stackblitz Demo

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