I am using help-text component in my lightning web component.

<lightning-helptext content="Size (width x height x lenght)"></lightning-helptext>

enter image description here

How can I change the tooltip background and text color?

I added this to my css but it does not work

.THIS .slds-popover_tooltip, 
.THIS .slds-popover--tooltip {
    background: #FF0000; /* background color */
    color: #444444; /* text color */

I do not think you can access the component's children like this and according to the documentation you cannot apply custom styling for the tooltip content in lightning-helptext using


You can only change the styling of the button

<lightning-helptext content="Size (width x height x lenght)" class="newColor"></lightning-helptext>


    --sds-c-button-color-background: #FF0000;

Additionally you could try something like that

<div style="padding-left:2rem;padding-top:5rem;position:relative">
        <button class="tooltip-btn slds-button slds-button_icon slds-button slds-button_icon" aria-describedby="help"
            aria-disabled="true" title="Help">
            <svg class="slds-button__icon" aria-hidden="true">
                <use xlink:href="/assets/icons/utility-sprite/svg/symbols.svg#info"></use>
            <span class="slds-assistive-text">Test</span>
        <div class="slds-popover slds-popover_tooltip slds-nubbin_bottom-left slds-hide" role="tooltip" id="help"
            <div class="slds-popover__body">
.tooltip-btn:hover + .slds-popover.slds-popover_tooltip.slds-hide {
    display : block!important;
  • Thanks for your answer. I want to change the background of the tooltip, not the button. I try to use this --sds-c-tooltip-color-background but it does not work. Could you have any suggestions?
    –  coinhndp
    Jun 4 at 10:10
  • Ah ok I cannot use that --sds-c-tooltip-* class. So there is no way that I can change the background color right?
    –  coinhndp
    Jun 4 at 10:19
  • How can I write a custom tooltip using lightningdesignsystem.com/components/tooltips? I copy and paste the template but the tooltip always shows
    –  coinhndp
    Jun 4 at 10:25
  • I editied the answer, you need to add the slds-hide class on the popover and then some css for the button on hover. Jun 4 at 11:10

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