A program to align plots of colors straight in the CIE xy chromaticity diagram
made by Akiyoshi Kitaoka, April 3, English translation May 5, 2022

Select hue deg (0-360)   change to two-color   change to one-color  
(Note) hue 0:red, 60:yellow, 120:green, 180:cyan, 240:blue, 300: magenta

alpha   Two-color method (luminance-linear)   Two-color method (luminance-linear) (maintaining luminance)   Two-color method (luminance-nonlinear) (maintaining luminance)   Two-color method (luminance-linear) (RGBCMY only)   Two-color method (luminance-linear) (maintaining luminance) (vivid white)   Two-color method (luminance-nonlinear) (maintaining luminance) (vivid white)   Two-color method (luminance-nonlinear) (maintaining luminance) 2

Plot color（×）   R   G   B   Draw

(x   y )

Triangle of the color gamut   sRGB (D65)（+）   dot size

Straight plots along a side of the color gamut*  RG   GB   BR   |   RY   GY   GC   BC   BM   RM  

Straight plots passing the white point (G65)  RC   GM   BY   |   RW   CW   GW   MW   BW   YW  

Land-Kuriki two-color method  RW   CW   GW   MW   BW   YW   alpha change

additive color change of a two-color image   RW   CW   GW   MW   BW   YW   alpha change

additive color change of *   RY   GY   GC   BC   BM   RM   alpha change

Land-Kuriki transgormation of *  RY   GY   GC   BC   BM   RM   alpha change

Additive color change (luminance-linear)    padding Additive color change (luminance-nonlinear)

Preset images

JavaScript programs

Akiyoshi's illusion pages