I can't find a way to change the color given by the Azure and Blue theme for the Material component. Especially for the mat-form-field (matInput). HTML <mat-form-field appearance="fill"> <mat-label>{{ "pression_amont_minimum" | translate }} (P1)</mat-label> <input matInput type="number" formControlName="PressAmMin" /> </mat-form-field> tried to change the style of the component by referencing to it inside the style.css and and component.css: mat-form-field{ background-color : white; } nothing happened input{ background-color : white; } a part of it changed to white Render mat-label{ background-color : white; } ::ng-deep didn't worked for me I found that changing the value of the .mdc-text-field--filled:not(.mdc-text-field--disabled) { background-color: var(--mdc-filled-text-field-container-color, var(--mat-app-surface-variant) ); could change the color of it but didn't find a way to reach this part of the css or override it. Continue reading...