How should I interpret DisplayCAL/DispcalGUI verification results?

There isn’t one universal “good” range for those values. Acceptable results depend on your workflow, target settings, and how critical color accuracy is for the final output.

In practice, DisplayCAL/DispcalGUI already helps here: recent versions show recommended tolerances in the verification report and mark samples that are outside the acceptable range.

A simple way to read the report is:

• Lower error values are better.
• If samples are flagged/ticked as too far off, the calibration/profile is missing the target by more than the software recommends.
• Brightness error should be close to your chosen luminance target.
• White point and neutral errors should be as low as possible, especially if neutral grays and color-critical work matter.

So rather than looking for a single fixed number, judge the report against:

1. your chosen calibration targets,
2. whether DisplayCAL flags any values as too high, and
3. the needs of your workflow (general use vs. color-critical editing/print work).