Run python compare.py in this directory (Python standard library only). It compares encoded RGB squared Euclidean distance with the current app CIELAB D65 squared distance over the same dictionary. These are calculations, not UI measurements. The separate live-picker-observations.json contains actual online UI readings from 2026-10-04. Upload name-fixture.png to https://pickimagecolors.com/color-name-from-image/ and click the eight tile centers. Coordinates are in calculated-results.json. Exact ties use dictionary order. The dictionary is color-name 2.0.0; see LICENSE-color-name.txt. This is not CIEDE2000, paint matching or a perceptual accuracy study.
