# Accessibility in Flutter Radial Gauge (SfRadialGauge)

## Screen reader

The [`SfRadialGauge`](https://pub.dev/documentation/syncfusion_flutter_gauges/latest/gauges/SfRadialGauge-class.html) can be made accessible to screen readers by wrapping it with the flutter [`Semantics`](https://api.flutter.dev/flutter/widgets/Semantics-class.html) widget. This provides meaningful information about the gauge to assistive technologies.

{% tabs %}
{% highlight Dart %}

  double _value = 50;

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: Semantics(
        label: 'Syncfusion Flutter Radial Gauge',
        value: _value.toString(),
        child: SfRadialGauge(axes: <RadialAxis>[
          RadialAxis(pointers: <GaugePointer>[NeedlePointer(value: _value)])
        ]),
      ),
    );
  }

{% endhighlight %}
{% endtabs %}

## Sufficient contrast

You can customize the color of the [`SfRadialGauge`](https://pub.dev/documentation/syncfusion_flutter_gauges/latest/gauges/SfRadialGauge-class.html) elements using the following APIs for the sufficient contrast.

* [Title](https://help.syncfusion.com/flutter/radial-gauge/radial-gauge-title#text-alignment)
* [Axis labels](https://help.syncfusion.com/flutter/radial-gauge/axes#label-style-customization)
* [Ticks](https://help.syncfusion.com/flutter/radial-gauge/axes#tick-customization)
* [Annotation](https://help.syncfusion.com/flutter/radial-gauge/annotation#alignment-of-annotation)
* [Marker pointer](https://help.syncfusion.com/flutter/radial-gauge/marker-pointer#marker-customization)
* [Text pointer](https://help.syncfusion.com/flutter/radial-gauge/marker-pointer#text-pointer)
* [Knob](https://help.syncfusion.com/flutter/radial-gauge/needle-pointer#knob-customization)
* [Tail](https://help.syncfusion.com/flutter/radial-gauge/needle-pointer#tail-customization)
* [Range pointer](https://help.syncfusion.com/flutter/radial-gauge/ranges#range-customization)

## Large fonts

For users who need larger text, you can adjust the font size of the [`SfRadialGauge`](https://pub.dev/documentation/syncfusion_flutter_gauges/latest/gauges/SfRadialGauge-class.html) elements using these APIs:

* [Title](https://help.syncfusion.com/flutter/radial-gauge/radial-gauge-title#text-alignment)
* [Axis labels](https://help.syncfusion.com/flutter/radial-gauge/axes#label-style-customization)
* [Annotation](https://help.syncfusion.com/flutter/radial-gauge/annotation#alignment-of-annotation)

## Easier touch targets

The [`SfRadialGauge`](https://pub.dev/documentation/syncfusion_flutter_gauges/latest/gauges/SfRadialGauge-class.html) follows accessibility standards by providing touch targets of 48 × 48 pixels for all interactive elements, making it easier for users with motor impairments to interact with the gauge.