Changing ion-icon color dynamically

Ionic Framework ionic-v3
1

Changing icon color dynamically

in the below code only the icon image changes not the color.
Doesn’t [color] binding work for ion-icon?

.HTML

    <ion-icon padding margin [name]="getIcon()" [color]="getIconColor()"></ion-icon>

.TS

  getIcon() {
    if (this.isInputValid || this.isInputValid == undefined) {
      return "ic-check";
    } else {
      return "ic-cross";
    }
  }

  getIconColor() {
    if (this.isInputValid || this.isInputValid == undefined) {
      return "primary";
    } else {
      return "danger";
    }
  }