Download a paint-matching app if you can’t take a sample. Most major paint brands have their own apps for matching paint colors, including Sherwin-Williams, BEHR, Glidden, and Valspar. Visit the app store on your smartphone and choose an app that will scan your wall color and provide you with a color match.Click to see full answer. In this regard, how do you match paint color already on the wall? Virtual painting and color-matching apps ColorSnap by Sherwin-Williams. ColorSnap by Sherwin-Williams offers color matching from your phone’s camera or photo library. ColorSmart by Behr. Color Capture by Benjamin Moore. Pick-a-Paint by Valspar. Project Color by The Home Depot. Color Grab. Nix Color Sensor Mini. Color Muse. Additionally, how big of a paint chip do I need to match? You’ll need a chip that’s at least one-inch square for the best results. At the paint store, staff will use their spectrophotometer to analyze the chip and match it to their brand’s closest color. Additionally, how does Home Depot match paint colors? Use a razor knife to cut a one-inch square off the face of your Sheetrock. Take the sample to your Paint Associate in a baggie or envelope to prevent smudging. When the match is complete, make certain the color actually matches place a dot on the corner of the sample and dry.How do you match touch up paint?Prime the part of the wall you intend to paint. Use high-quality latex primer, and don’t go beyond the area you’d like to touch up. Match your touch-up paint to the wall color.