From adamwathan's article, Tailwind's advantage is it limits you to fewer choices. So .text-grey .text-grey-dark .text-grey-darker .text-grey-darkest... rather

From adamwathan's article, Tailwind's advantage is it limits you to fewer choices. So .text-grey .text-grey-dark .text-grey-darker .text-grey-darkest... rather than coming up with and remembering the hex color values, which might vary between team members.