The phrase "a swatch on" is correct and usable in written English.
It can be used when referring to a sample or piece of fabric, color, or pattern that is being displayed or referenced in a specific context.
Example: "She chose a swatch on the table to match the curtains with the new sofa."
Alternatives: "a sample of" or "a piece of".
2. On a piece of paper, make a swatch of pure blue on one end and one of pure orange on the other.
Over time, the pebbles grow a swatch of ice on their tops, like a bad toupee.
Adam Sarner, an analyst with the Gartner Group, which specializes in Internet-related maresearchearch -- who acknowledged that he recently caught auction fever himself and splurged on a swatch of retro "Star Wars" wallpaper on eBay -- said that business-to-consumer auctions were "a marketing rather than a business model".
"A Movable Object / A Japanese Garden" (2012) rings a change on that idea with ragged chunks of asphalt heaped on a swatch of lovely blue fabric, by Issey Miyake, and mounted on a wheeled platform.
Most passengers were inside with the band, closing in on a swatch of dance floor, but the sound was also being piped on deck, where I slouched at a rail.
"I've never been able to see this one," says a woman named Atlee, pointing at a swatch of pink paint on the wall.
The words—"They stripped us and dragged us to a cell and made me lie on my stomach"—have been inked in Courier type on a swatch of linen.
The first freestyle skiing event took place on a swatch of snow moved there by snowplows, trucks and helicopters.
A left-brained type more suited to discussing Magritte or Dalí than natural resource extraction, he nevertheless procured some geothermal maps, homed in on a swatch of desert near Twentynine Palms and snapped up three acres for $35,000 in 2002.
Alighting on a swatch of crimson runner and posing gamely for photographers were the Fendi heiress Fé Fendi, swathed in a Carolina Herrera floral chiffon; the philanthropist Somers Farkas in a pewter Maggie Norris evening slip; and the social stalwart Mai Hallingby Harrison, sheathed in vintage Halston.
