I spent three months in early 2024 rebuilding our design tool’s canvas layer from scratch. The old version was flat — every panel, every toolbar, every floating inspector sat on the same visual plane. Users told us the tool felt “heavy,” but we could not figure out why. Performance benchmarks were fine. Frame rates hovered at sixty. The problem was not speed — it was depth.
Depth as information architecture
When every surface in an interface shares the same opacity and the same elevation, the brain works harder to parse what matters. Real translucency — the kind that shows a blurred glimpse of what lies beneath — is a spatial cue. It tells you this panel floats above that canvas. This dialog belongs to that window. This toolbar is a temporary overlay on a persistent workspace.