Blindness is a harmful (negative) status effect in Minecraft Java Edition 1.21.
Namespaced effect IDminecraft:blindness
Blindness Effect Facts
CategoryHarmful
Legacy ID (1.12.2)15
/effect Command for Blindness
Give Blindness II for 60 seconds (Java Edition 1.13+; duration in seconds, then amplifier where 0 = level I):
/effect give @p minecraft:blindness 60 1
Remove the effect from the nearest player:
/effect clear @p minecraft:blindness
Blindness Effect FAQ
What is the effect ID for Blindness?
The effect ID for Blindness is minecraft:blindness. Java Edition 1.13+ /effect commands use this namespaced form. On Java 1.12.2 and earlier the numerical ID was 15.
How do I give myself the Blindness effect?
Run /effect give @p minecraft:blindness 60 1 to get Blindness II for 60 seconds. The first number is the duration in seconds; the second is the amplifier (0 = level I, 1 = level II). Remove it with /effect clear @p minecraft:blindness.
Is Blindness a positive or negative effect?
Blindness is a harmful (negative) status effect in Minecraft Java Edition, based on its registry category (harmful).