I started a painting project with 80% of a gallon I already had. I thought I had enough to finish the job, I ended up running out of paint. It was Glidden I used .gasp! I know, not the best quality, but it was given to me & I liked the color so that’s what I used. I am not about to go to the place that sells Glidden to get a color match, so I tried Sherwin-Williams. Gave them a piece of paper I painted for them to scan, end result? SEAMLESS color match! Very pleased with my experience! They saved me from having to repaint the whole room.