W3C is pleased to announce the report from the W3C Workshop on Wide Color Gamut and High Dynamic Range for the Web , held online in July-September 2021. This report contains an executive summary, introduces the subject area, discusses major topics from the live sessions, links to the presentation videos and session minutes, and details next steps that were taken, and continue to be explored, after the workshop. The workshop connected the color science, content creation and web platform communities and explored the current, ongoing transition of the web platform from the legacy sRGB, narrow gamut, standard dynamic range world of the previous quarter century, through wide color gamut, and onto high dynamic range. 15 workshop talks were published and discussed online in five live sessions. The main outcomes are that: Standardization efforts on WCG and HDR are in-place and ongoing at W3C, the International Color Consortium, the Alliance for Open Media,...