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ToolShedby Wasim Shaikh
All Angular Material icons

Siren Question icon

siren_question: the Siren Question icon from Material Symbols, in Social. Customize the size, color, fill and weight below, then copy ready-to-use Angular code.

Style
400
Grade
24px
Size
Colour
Template
<mat-icon>siren_question</mat-icon>
Component
import { MatIconModule } from '@angular/material/icon';

@Component({
  imports: [MatIconModule],
  // …
})

Siren Question icon variants

Every Material Symbols style, unfilled and filled, at weights 200, 400 and 700. Copy the <mat-icon> for a style, then set fill and weight with font-variation-settings.

Outlined

material-symbols-outlined
200
400
700
fill 200
fill 400
fill 700
<mat-icon>siren_question</mat-icon>

Rounded

material-symbols-rounded
200
400
700
fill 200
fill 400
fill 700
<mat-icon fontSet="material-symbols-rounded">siren_question</mat-icon>

Sharp

material-symbols-sharp
200
400
700
fill 200
fill 400
fill 700
<mat-icon fontSet="material-symbols-sharp">siren_question</mat-icon>

Examples in Angular Material

Common places to use siren_question, with the template code. Previews are drawn to match Angular Material's Material 3 components.

Icon button

<button mat-icon-button aria-label="Siren Question">
  <mat-icon>siren_question</mat-icon>
</button>

Button with icon

Siren Question
<button mat-flat-button>
  <mat-icon>siren_question</mat-icon>
  Siren Question
</button>

Floating action button

<button mat-fab aria-label="Siren Question">
  <mat-icon>siren_question</mat-icon>
</button>

List item

Siren Question
<mat-list>
  <mat-list-item>
    <mat-icon matListItemIcon>siren_question</mat-icon>
    <span matListItemTitle>Siren Question</span>
  </mat-list-item>
</mat-list>

Toolbar

My App
<mat-toolbar>
  <span>My App</span>
  <span class="spacer"></span>
  <button mat-icon-button aria-label="Siren Question">
    <mat-icon>siren_question</mat-icon>
  </button>
</mat-toolbar>

Form field prefix

Siren Question
<mat-form-field appearance="outline">
  <mat-label>Siren Question</mat-label>
  <mat-icon matPrefix>siren_question</mat-icon>
  <input matInput />
</mat-form-field>

How to customize the Siren Question icon in Angular Material

Use the controls at the top of this page to preview siren_question at any size and color, filled or outlined, and at any weight, grade or optical size, then copy the code. Here is what each setting does in your own Angular app.

Change the Siren Question icon size

<mat-icon> is fixed at 24 × 24 px, so set width and height along with font-size or the Siren Question glyph will overflow its box. Match opsz to the size for the crispest strokes.

<mat-icon class="siren-question-icon">siren_question</mat-icon>

.siren-question-icon {
  font-size: 40px;
  width: 40px;
  height: 40px;
  font-variation-settings: 'opsz' 40;
}

Change the Siren Question icon color

The icon is a font glyph, so it takes the CSS text color. Set color on the <mat-icon> or on a parent, or use a theme variable to follow light and dark mode.

.siren-question-icon {
  color: #1a73e8;
  /* or follow your Material 3 theme */
  color: var(--mat-sys-primary);
}

Use the filled Siren Question icon

Material Symbols draws siren_question as an outline by default. Set the FILL axis to 1 for the solid version. It is the same icon name, so no extra font is needed.

.siren-question-icon {
  font-variation-settings: 'FILL' 1;
}

Change the Siren Question icon weight, grade and optical size

Weight (wght, 100 to 700) sets stroke thickness. Grade (GRAD, -25 to 200) fine-tunes thickness without changing size, for example -25 for light icons on dark backgrounds. Optical size (opsz, 20 to 48) adjusts detail for the size you display. Your font link must request these ranges, as below.

<link rel="stylesheet" href="https://fonts.googleapis.com/css2?family=Material+Symbols+Outlined:opsz,wght,FILL,GRAD@20..48,100..700,0..1,-50..200&icon_names=siren_question&display=block" />

.siren-question-icon {
  font-variation-settings: 'FILL' 0, 'wght' 300, 'GRAD' 0, 'opsz' 24;
}

Siren Question icon FAQ

How do I change the color of the Siren Question icon in Angular Material?
Give the <mat-icon> a class and set the CSS color property, for example .siren-question-icon { color: #1a73e8; }. The siren_question icon is a font glyph, so any text color works, including theme variables such as var(--mat-sys-primary).
How do I make the Siren Question icon bigger?
Set font-size, width and height together, for example font-size: 40px; width: 40px; height: 40px;. <mat-icon> has a fixed 24px box, so changing font-size alone makes the icon overflow.
How do I get the filled Siren Question icon?
Keep <mat-icon>siren_question</mat-icon> and set font-variation-settings: 'FILL' 1 in CSS. Material Symbols uses one name for both the outlined and filled Siren Question icon.
How do I make the Siren Question icon thinner or bolder?
Change the wght axis with font-variation-settings, from 'wght' 100 (thin) to 'wght' 700 (bold). Load the font with the full weight range, or the browser falls back to 400.
Can I download the Siren Question icon as an SVG?
Yes. Pick a style, fill and weight in the preview above, then open the SVG tab to copy or download siren_question.svg. Google publishes it under the Apache License 2.0, so it is free for commercial use.

About this icon

Name
siren_question
Icon set
Material Symbols only (new, not in legacy Material Icons)
Category
Social
Also found by
?, alarm, answer, assistance, bell, caution, critical, danger, emergency, hazard, help, incident, info, inquiry, issue, light, police, problem, problematic, punctuation, query, question mark, risk, status update, support, troubleshooting, unknown, unsure
Symbols codepoint
U+F3A4
Licence
Apache License 2.0, free for commercial use (Google Fonts)

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