How to set the color of an icon in Angular Material?

That's because the color input only accepts three attributes: "primary", "accent" or "warn". Hence, you'll have to style the icons the CSS way:

1. Add a class to style your icon:

   .white-icon {
       color: white;
   }
   /* Note: If you're using an SVG icon, you should make the class target the `<svg>` element */
   .white-icon svg {
       fill: white;
   }
   

2. Add the class to your icon:

   <mat-icon class="white-icon">menu</mat-icon>
   

In the component.css or app.css add Icon Color styles

.material-icons.color_green { color: #00FF00; }
.material-icons.color_white { color: #FFFFFF; }

In the component.html set the icon class

<mat-icon class="material-icons color_green">games</mat-icon>
<mat-icon class="material-icons color_white">cloud</mat-icon>

ng build

Or simply

add to your element

[ngStyle]="{'color': myVariableColor}"

eg

<mat-icon [ngStyle]="{'color': myVariableColor}">{{ getActivityIcon() }}</mat-icon>

Where color can be defined at another component etc