What would be the color name for this sweater top?

Pantone Cayenne

Gems-Cayenne-Omi.jpg
 
That's one of my favorite colors. Great choice. I would call it persimmon, a red-orange.

It's in the orange family often times, so if you search, most sites just filter by primary color, and I find they tend to group this shade in the orange grouping.

Good luck!