Trigger button style

 

    <Style x:Key="Style.OkOperationButton"
               TargetType="ButtonBase">
            <Setter Property="Width" Value="110" />
            <Setter Property="Height" Value="44" />
            <Setter Property="FontSize" Value="24" />
            <Setter Property="Background" Value="#FF0087FF" />
            <Setter Property="HorizontalContentAlignment" Value="Center" />
            <Setter Property="VerticalContentAlignment" Value="Center" />
            <Setter Property="Template">
                <Setter.Value>
                    <ControlTemplate TargetType="{x:Type ButtonBase}">
                        <Border x:Name="Border" Width="{TemplateBinding Width}"
                                Height="{TemplateBinding Height}"
                                CornerRadius="22" Background="{TemplateBinding Background}">
                            <TextBlock x:Name="TextBlock"
                                       Text="{TemplateBinding Content}"
                                       FontSize="{TemplateBinding FontSize}"
                                       HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}"
                                       VerticalAlignment="{TemplateBinding VerticalContentAlignment}" />
                        </Border>

                        <ControlTemplate.Triggers>
                            <Trigger Property="IsPressed" Value="True">
                                <Setter Property="Background"
                                        Value="#FFfcac1c" />
                                <Setter TargetName="TextBlock" Property="Foreground" Value="#FFFFFFFF" />
                            </Trigger>
                            <Trigger Property="IsEnabled" Value="False">
                                <Setter TargetName="Border" Property="Background" Value="#4D0087FF" />
                                <Setter TargetName="TextBlock" Property="Foreground" Value="#4DFFFFFF" />
                            </Trigger>
                        </ControlTemplate.Triggers>
                    </ControlTemplate>
                </Setter.Value>
            </Setter>
        </Style>