We started this article with that carousel, but we didn’t talk about each images. What information do they give?
We saw that Pantone has a larger gamut than CMYK, because it works with its 18 basic colors and a translucid white. If you check on charts that make Pantone and CMYK swatches next to each other, you will see that Pantone offers larger and brighter possibilities in turquoise: adding its Pantone green and translucid white to its Pantone process blue extends possibilities. As we know that digital cyan is more blue than green, we can expect to see impossible reachable color in that area when converting to CMYK.
And even Pantone doesn’t reach that bright cyan, whatever guide is used. That bright cyan pigment that should absorb only 100% of red lenghtwaves is not only hard to find, but doesn’t exist at all! (That’s why you won’t see paint that bright too!)
Now, you know that because of the different Pantone basics, some colors are difficult or impossible to reach in CMYK: orange colors are one of those because their brightness! But, sometimes you may even be surprised in unexpected ways with colors less bright, like in purple area!