This setting adjusts the opacity of the outer point of the linear gradient.

• 100%: the outer point will be fully opaque (default value).
• 50%: the outer point will be semi-translucent.
• 0%: the outer point color will be completely transparent.

You can use this value to finetune the appearance of your chart. Higher opacity will make the chart elements more vibrant and pronounced, while lower opacity will blend the outer edges of your chart with the background.

This setting is available if your selected Fill Mode is Gradient to a derived color or Gradient to a single color.