With this setting, you can adjust the transparency of the series value label background with a value between 0 and 100. The default value for this property is 40.

Lower opacity values will create a subtle and clean appearance, while higher opacity will ensure the best label legibility:

• 0%: The series value label background will be completely transparent, and only threshold text will be visible.
• 50%: The series value label background will be semi-translucent, blending in with the chart elements and the background.
• 100%: The series value label background will be completely opaque, obscuring any element behind it.

Label opacity settings will not be applied to the label’s border, as its appearance is adjusted separately with the Background Line Opacity setting.