How to substitute Cobalt Teal using a Phthalo Mix

Cobalt Teal is a beautiful color that I like to use for seascapes. But it seems Cobalt Teal is being discontinued, and I found that some of the replacements were not the same color. However, using a mix of the phthalo blue and green that are closest together in the color wheel does provide a perfect replacement for cobalt teal. So I used Phthalo Blue Green Shade, Phthalo Green Blue Shade and a generous amount of Titanium White to obtain a highly saturated teal that was identical to the tube of Sennelier Cobalt Teal that I had been using. To the naked eye the phthalos and titanium white mix was a perfect substitute to the cobalt teal. However, on the digital picture of the palette, since I had to increase the brightness on the computer, I could see some slight differences in value, the phthalo teal being a little bit darker than the original cobalt teal. I believe adding another pinch of white to the mix would do the trick.
Because it is a convenient mixture, you can mix it and store it in air tight containers to always have it handy.

Replacing cobalt teal with a mix of phthalos and titanium white