A "neutral sofa" refers to a couch that is of a color or design that is not bold or vibrant. It typically has plain or subtle tones, like white, beige, or gray, allowing it to blend well with various styles and colors in a room. Full definition
This traditional living room is a family friendly space, with a large neutral sofa, softened with natural timber tones and a luxurious rug. (idealhome.co.uk)
I went with this patterned pair, which adds a powerful punch of personality to my otherwise neutral sofa. (meijerstyle.com)
For that reason, I recommend buying a classic neutral sofa if you are spending a lot of money on it! (theinspiredroom.net)