I don't have that pattern but I did get a new liner a few years ago and did considerable research. The reef pattern has a lot of blue but there are some other colors blended in there that will most likely give it a slight teal tint, especially with the sun out. If you want blue instead you should look at liner patterns that are primarily blue. Liner colors are difficult to choose because the water color is a mix of the color of the liner and reflections of the blue sky above and other nearby items. We ordered our liner when covid was just coming on and fears of supply shortages were beginning. We were told to pick three patterns in order of preference but we would have to take what we got. When they came to install the liner my wife took a picture and sent it to me. I wasn't sure which one it was. It turned out to be our first choice but looked nothing like the picture. At the top of this page is my post in the liner example thread:
Latham Tan Sierra / Gold Pebble
www.troublefreepool.com
There is a lot of difference between the actual latham sample in the middle and the actual liner with water in the pool. Also note that at night with lights on the hue is blue instead. I was trying to get a teal water color and am very pleased with the final results.