HAXBY is the jGraph module of jLab.

 HAXBY  The Haxby colormap.
 
    HAXBY(M) returns an M-by-3 matrix containing the Haxby colormap, see
 
         https://www.mathworks.com/matlabcentral/fileexchange/
                        25690-haxby-color-map?s_tid=prof_contriblnk
 
    HAXBY with no arguments returns a colormap having the same number of 
    colors as the colormap of the current figure.
 
    To make HAXBY your default colormap, add to your startup.m file the
    line "set(0,'DefaultFigureColormap',haxby)".
 
    This implementation was written by Kelsey Jordahl, modified and 
    redistributed in accordance with the copyright policies given in 
    HAXBY_COPYRIGHT.
 
    Kelsey's original notes:
 
    Colormap is based on the colors used by W. F. Haxby's Gravity Field of
    World's oceans, 1985, developed for geoid and gravity maps.  The 
    version used here is formed from a linear interpolation of the GMT 
    color table used by MB-System by David W. Caress and Dale N. Chayes.
 
         https://www.mbari.org/products/research-software/mb-system/
 
    Usage: h=haxby(M);
           colormap haxby
    __________________________________________________________________
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    (C) 2008--2020 J.M. Lilly --- type 'help jlab_license' for details