Hate to say this, but trying to determine an exact color on a computer screen using photographs from different sources is impossible.
To get correct color renditions, the (digital) camera and computer screen have to be matched. What any color looks like to you on you computer will probably look completely different on any other monitor.
For that matter, printer color profiles have to be matched, too - for specific types and brands of paper. Try printing a picture of a "Viking Blue" Cobra on el cheapo photocopy paper, 24 lb. 96 brightness premium inkjet paper, and two brands of inkjet photo paper. You will get four shades of "Viking Blue".
I guess that's O.K., because the Viking Blue coming out of Shelby's Venice shop had a W-I-D-E variance also.
P.S.: Lighting has a tremendous effect on color. Sunlight, cloudy daylight, incandescent, halogen and flourescent lighting all make a BIG difference.
I took the photos of Lynn Parks' FIA roadster below. Which is "correct"?
