Can't change ActionBar title text color

I am using this and it works for me

<style name="AppTheme" parent="Theme.AppCompat.Light.NoActionBar">
    <item name="titleTextColor">@android:color/white</item>
    <item name="subtitleTextColor">@android:color/white</item>
</style>

titleTextColor is an attribute available for v23 only.

1. Check that in your layout xml file you don't have an android:theme attribute specified for your <Toolbar>, which would have priority over the main theme

2. Override your actionBarStyle attribute as pointed out everywhere over the internets.

<style name="Theme" parent="Theme.AppCompat.Light.DarkActionBar">
    <item name="actionBarStyle">@style/ActionBarStyle</item>
</style>

<style name="ActionBarStyle" parent="Theme.AppCompat.Light.DarkActionBar" >
    <item name="android:titleTextStyle">@style/ActionBarTitle</item>
</style>

<style name="ActionBarTitle" parent="Widget.AppCompat.ActionBar">
    <item name="android:textColor">@android:color/black</item>
</style>

This line of code works for me

app:titleTextColor="@android:color/white"

Image Showing the implementation of a Toolbar