Dynamically Change Line Colors Based on a Threshold

Hello Kedar_Pande 
Check out the below article
https://medium.com/@simon.harrison_Select_Distinct/conditional-format-a-line-chart-in-power-bi-61e25a70e431

Thanks & Regards...

Kedar_Pande ,

To achieve dynamically formatted color changes on a line chart (markers only) you can use conditional formatting on the markers. But, this requires initially creating a bar chart with conditional formatting and then changing it to a line chart. Or else you can try multiple measure approach.

check this thread - https://community.fabric.microsoft.com/t5/Desktop/Line-Chart-Conditional-Formatting/m-p/375161