1. phrasal verb
If something blends into the background, it is so similar to the background that it is difficult to see or hear it separately.
[V P + with] ⇒ The toad had changed its colour to blend in with its new environment.
[V P n] ⇒ ...a continuous pale neutral grey, almost blending into the sky.
[V P] ⇒ You can blend in so that the voice becomes just another instrument in the band.
2. phrasal verb → blend If someone blends into a particular group or situation, they seem to belong there, because their appearance or behaviour is similar to that of the other people involved.
[V P n] ⇒ It must have reinforced my determination to blend into my surroundings.
[V P] ⇒ She felt she would blend in nicely.
[V P + with] ⇒ He blended in with the crowd at the art sale.
COBUILD Advanced English Dictionary. Copyright © HarperCollins Publishers