The brewer.pal.info object has all the detail you want. If you wanted a process for narrowing it down, you could do something like:
# dependencies
suppressMessages(library(dplyr))
library(tibble)
library(RColorBrewer)
# displacy a single item
brewer.pal.info %>%
rownames_to_column(var = "name") %>%
filter(name == "OrRd")
#> name maxcolors category colorblind
#> 1 OrRd 9 seq TRUE
Created on 2019-03-20 by the reprex package (v0.2.1)