How to change color of CompoundDrawable on Button?

You can set tint programmatically like below:

int tintColor = ContextCompat.getColor(context, android.R.color.darker_gray);

Button button = (Button) findViewById(R.id.button);

Drawable drawable = ContextCompat.getDrawable(context, R.mipmap.ic_email_black_18dp);
drawable = DrawableCompat.wrap(drawable);
DrawableCompat.setTint(drawable.mutate(), tintColor);

drawable.setBounds( 0, 0, drawable.getIntrinsicWidth(), drawable.getIntrinsicHeight());

button.setCompoundDrawables(drawable, null, null, null);

Or you can use library Support Drawable Tints by snodnipper.
This library enables to set tint for drawableLeft of Button.
https://github.com/snodnipper/android-appcompat-issue198613

to set icon color use

android:drawableTint="@color/colorPrimary"