How to add dynamic background color in ion-fab-button using ionic-v4?

I am using the ionic 4 fab button, in the fab button I want to set a dynamic background color.

here example code:


<!-- fab placed to the bottom end -->
<ion-fab vertical="bottom" horizontal="end" slot="fixed">
  <ion-fab-button [style.background.color]="currentColor" [style.color]="isColorLight(currentColor) ? 'black' : 'white'"
    <ion-icon name="color-palette"></ion-icon>
  <ion-fab-list side="top">
    <ion-fab-button (click)="switchColor(i)" [style.background.color]="colors[i]"
      *ngFor="let color of colors; let i = index">


colors: string[] = ['#000000', '#db0f0f', '#0fbf0f', '#35a3e8', '#FFFFFF'];
currentColor: string = this.colors[0];
switchColor(index: number) {
  this.currentColor = this.colors[index];

Also, I try [style.background-color]="currentColor" but it is not working.

try [style.backgroundColor]


Not working

is the color of fab button changing if you give color in scss

Yes, working if I add style in the page.scss file

ion-fab-button {
  --background: #000000;


See if this helps

did you try [style.color] instead of background…

maybe not, just 2 min i will check

not working this too

do you want to change the background or the color of fab button…I suppose the color of fab button?

I want to change ion-fab-button background color

it is just color
ion-fab-button [color]="‘yourcolor’"

Here you can generate the code for the colors

@gokujy Did it work??

Well If I user as @danielmm1997 said but it’s working with var color. My question is I want to use custom color as in the question. Thank you for your time @PratikVaity and @danielmm1997

i think u can make your own colors in variable.scss and use them. i have never tried it though


this might help try it

I did as you said and it’s working good. thank you :slight_smile:

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