Your wall color is going to have to work with the floors and trim as well. Will you post a photo of the room and the sectional?

We need a pic or 2 and posted in jpeg and make sure you show the whole room.. There are 1000s of light paint colors they need to be chosen with all elements in a space

Based on the marketing photos for this sofa it looks like it is a taupe or violet gray, not a true gray.

The two dollops I pulled from BM website are: Violet Pearl on the left and Antique Pearl in the center. The circle on the right is a true neutral gray.

You will want to get a neutral that has some violet undertones. Probably not as pink/violet as the two dollops above, but maybe something like BM Pale Oak, SW Heron Plume, BM Classic Gray, BM Balboa Mist, SW City Loft.

This color is beautiful with shades of purple and blue greens. With a Florida Home SW Sea Salt would be beautiful coastal look.

a light gray leather sofa and what color floors? any other colors in the room? an area rug? framed art? window treatments? Does the sectional take up the whole room? is it a family room, for TV viewing? waiting for photos of the whole space.

https://www.eldoradofurniture.com/gian-marco-light-gray-leather-power-reclining-sectional-with-6pcs2pwr.html

Undertone is key and the shade has to also work well with your accessories if already purchased. The article below has info on some paint colors, but there is lots of similar information on line.

https://decorcreek.com/best-white-paint-colors-from-sherwin-williams-trendy-this-year

Decide on the undertone and bring home test pots so you can compare during the day and at night. It’s a better way than getting suggestions, as there are too many variables to consider.

nothing but the sofa and the roller shade needs to stay everything else is up for grabs looking for paint color and draperies

Before going through all the trouble of painting, a lighter window treatment, new rug and your grey art elsewhere will have a huge effect. Based on your picture, the wall color looks complementary with your sectional, but down the road if it’s still bothering you then paint. Adding new accessories won’t be a waste of money either way.