Bezold–Brucke effect exists in related and unrelated colors and resembles the Abney effect

An Erratum has been published for this article in Color Research and Application 29:402, 2004 . I wish to correct a sometimes‐held misconception that Bezold–Brucke hue‐shift applies only to aperture colors and not to real object colors. I also demonstrate the broad similarity between this and Abney hue‐shift, despite a contrary report. © 2004 Wiley Periodicals, Inc. Col Res Appl, 29, 241–246, 2004