Trouble with implementing Angular Material button color when using routerLinkActive

For my application, I am implementing Angular Material and have configured the button as follows:

<mat-toolbar>
  <span>
    <a routerLink="/">My Messages</a>
  </span>
  <ul>
    <li>
      <a mat-button routerLink="/create" routerLinkActive="mat-accent">
        New Post
      </a>
    </li>
  </ul>
</mat-toolbar>

Concern:

Upon navigating to the /create route, the expected behavior is for the New Post button to display with the accent color specified by mat-accent when active. However, it continues to appear in black instead of the anticipated pink from the indigo-pink theme.

I have verified that the theme is correctly imported in angular.json:

"styles": [
  "node_modules/@angular/material/prebuilt-themes/indigo-pink.css",
  "src/styles.scss"
]

The following code snippet highlights the issue:

.mat-mdc-button.mat-accent{ 
    --mdc-text-button-label-text-color : #ff4081
}

is being overridden by

.mat-toolbar .mat-mdc-button-base.mat-mdc-button-base.mat-unthemed{
   --mdc-text-button-label-text-color : var(--mat-toolbar-container-text-color)
}

Steps taken so far:

  • Clearing the Angular cache.
  • Inspecting CSS for any specificity conflicts.
  • Ensuring all dependencies are up to date.

Why is the mat-accent color not being applied to the button when active?
How can I adjust the toolbar's styling to allow the accent color to be displayed correctly?

Your insights on this matter would be greatly appreciated!

Answer №1

The main factor contributing to this is

.mat-mdc-button.mat-accent{ 
    --mdc-text-button-label-text-color : #ff4081
}

preceding the latter rule.

To resolve this issue, simply include an !important declaration in the CSS rule, like this:

.mat-mdc-button.mat-accent{ 
    --mdc-text-button-label-text-color: #ff4081 !important;
}

This adjustment should rectify the problem.

Answer №2

To style Material 2 elements, you can utilize the color attribute along with the routerLinkActive directive:

<a mat-button [color]="rla.isActive ? 'accent' : null" routerLink="/create" routerLinkActive #rla="routerLinkActive">
  New Post
</a>

However, for Material 3, there are new specifications for applying colors:

The color scheme of the button based on the theme. This feature is only applicable to M2 themes and does not work in M3 themes.

To learn more about using color variants in M3, refer to https://material.angular.io/guide/theming#using-component-color-variants.

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