Magic swords all give off light unless their description says otherwise. Normally, the light cannot be turned off. Certain swords turn off their light via a command word or intelligence, at the DM's option.
The following table expands on the PHB 102 table to include more types of swords:
| Sword | Illumination Radius |
|---|---|
| Dagger, tantou (短刀) | 10' |
| Short sword, epee, wakizashi (脇差) | 15' |
| Longsword, broadsword, rapier, scimitar, katana (刀) | 20' |
| Bastard sword | 25' |
| Two-handed sword, nagaegatana (長柄刀), zweihander | 30' |