A subtle textured background featuring light stone or concrete texture in shades of grey and blue. The base color is #d3d3d3, with very soft variations of light blue (#b0c4de) and light grey (#e0e0e0), creating a calm and minimalist look. The texture should be smooth and unintrusive, ideal for a website slider. Image dimensions 1920x700, soft, and not too colorful  --ar 96:35