Design AtlasThe name comes from Damascus, Syria, a major hub on the Silk Road. It's the height of medieval weaving technique: warp-faced satin weave and weft-faced sateen alternate within the same cloth to form the pattern — meaning it doesn't use two colours at all. The motif and ground are told apart purely by how the same-coloured thread catches light at different angles.
Visually it's a large, mirror-symmetric floral or foliate motif repeated along a diamond (ogee) lattice. The repeat unit is large and generously spaced, which is also why damask can look almost plain up close and only resolve into its pattern from a distance.
Using two literal colours in CSS/SVG works against the original tone-on-tone character, so a web version approximates that sheen contrast with two brightness levels of the same hue instead — a darker pair of mirrored leaves against a lighter body. An SVG <pattern> draws that symmetric leaf-and-bud motif and repeats it straight down the column.
When to use
Use for upholstery/wallpaper texture and formal invitation or packaging backgrounds. Keep the two tones close — strong colour contrast kills damask's signature subtlety.