If I understand correctly, put Measure Name on color and then it will show up as part of the legend. You can alias it if you need to change the name. See attached example
dual axis bar & line.twbx 1.2 MB
Nichole, Thanks for responding back. But I have already assigned one color to measure 1 and cannot change that nor drop measure names directly to color tab. I'm looking to see if there is a way we could display grey line graph as a legend. I just wanted to add that grey represents measure 2
Can you share your workbook? it is hard to figure out what you want to do otherwise.
This should be pretty easy. Drag the Measure name to Color in "All Marks"
Note: Once you do that, you will have to re-assign the Green to Measure 1 and Grey to Measure 2. Also, make sure you remove the measure 1 from the color before you start this process.
This way you will see them both
I use it all the time.
Let me know how does it go!