Thank you for posting this, Carter. This is helpful but I hope that it is brought up to date and corrections made. For example, "bone" has "ivory" under it as if they are the same color. Both are off-whites but ivory is warm and bone is cool and more of a very pale grey, lighter than "pearl".
I do not see "sapphire" under the blues, although it has been around for a few years, nor do I see "oregano" under greens. I may try to submit a few missing colors but I have nothing in "stone" (different from "dark stone" or "dark pearl" (different from "pearl"). Even EF items bought new with the same color name can clash, especially in different fabrics.