ดูโอโทน (Duotone)

Duotone replaces the shadows with one color and the highlights with another, with midtones blending between the two. Originally a printing technique for adding richness to two-color print jobs, duotone has become a popular digital design trend for hero images, brand photography, and social media content. Spotify popularized the modern duotone aesthetic in their marketing. The technique works especially well with high-contrast photographs and allows designers to unify diverse imagery under a consistent brand palette. In CSS, duotone effects can be approximated using mix-blend-mode and gradient overlays.