I have seen a number of reports from people using red LED lights as safelights without issue. Do a
safelight test and if it works you are good to go.
OC / amber / orange / light brown is the recommended safelight for working with papers but, as far as I know, red works just fine too. Don't forget multigrade papers are blue-sensitive materials. In terms of wavelegth, red light is actually farther from blue than orange. I believe orange is normally used just because it's easier to see than with the red light. I have used both for B&W printing.