Defining another sRGB Color Space Profile: sRGB_jc1.icc

sRGB (IEC61966-2.1) vs sRGB_jc1

Basic Property                       sRGB                         sRGB_jc1

White                  D65              D50

Gamma                  2.2,custom*      2.2,16-bit grid

Color space            RGB              RGB
Implementation         Matrix           Cluts

Profile size(bytes)    3,144            589,928

icc format version     2.1              2.1

Gamut Volume**         798,455          770,429

Profile Device type    DisplayClass     OutputClass

Supported RI***        Colorimetric     All****

*    1024-point

**   Under D50 condition 

***  Supported Color Rendering Intent
**** Colorimetric/Saturation/Perceptual

Other Characteristic
The grapher plots, either in Lab space or xyY space, they are almost indistinguishable.

Color Reproduction Consideration

Test sample size: 5832 RGB points, 0 to 255, 15-pitch

Method: Read RGB, compute and compare Lab values under D50 condition.

Result

Above result suggests that the RGB distribution within the color gamut between sRGB_jc1 and sRGB is very similar if not identical.