I don't know if this helps any but here's a small color history and color chart on Tiffany Blue- Tiffany Blue - Wikipedia, the free encyclopedia
It's my favorite color. I am an Tiffany jewel fanatic. Tiffany Blue has actually changed shades over the years in different hues. There are several different versions of Tiffany Blue.
The closest I ever found for Tiffany Blue was some beautiful cardstock I found at a local stationery store (now defunct) years ago. Sadly, I don't have any more.
I will be watching this thread closely too.