Its called Charcoal "if memory serves". Unfortunately the normal repro suppliers don't make that color.
If you remove a dash speaker grill ect, ect you can have it custom mixed to match at most auto body paint supply houses.
You can also have it matched at higher end regular paint stores that sell lacquers for furniture and cabinets ect. Some will even put it in aerosol cans for you.
I mixed a couple quarts years ago and occasionally still dig it out of the cabinet for touch up.
Good Luck