What if the wall reflects light 400 to 500 nm and absorbs light 600 to 700 nm?

If the wall reflects light in the 400 to 500 nm range and absorbs light in the 600 to 700 nm range, it would appear to our eyes as a color that falls within the reflected range (blue-green) and not in the absorbed range. The absorbed light would not contribute to the perceived color of the wall.