I have an IPS LED screen and I don't like its black because it is very dark. I know it's a bit strange (is it?) but I want the black to be more bright (that means grey) without white becoming darker. A dark blue would naturally become more bright then too and so on.

The contrast setting in the LED screen is already adjusted very low, so I think an ICC Profile would be good to make it better. It shall be an ICC Profile which is active the whole time in Windows which is strictly speaking called calibration file (ICM).

I can describe my desired transformation with 4 numbers and a principle but won't insist on it exactly:

  • 0 (black) to grey (0.3)
  • 1 (white) to 1 (white)
  • linear interpolation in between

so I think there should be a simple icc file or software to create it for my purpose? I have already digged in some icc files and saw some complicated color spaces which would be overwhelming to dig into for my purpose.


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    \$\begingroup\$ Welcome Hansebenger! In the current for, I have trouble seeing the relevance to photography. If this is simply a question on how to tweak a display to your personal taste, I am afraid, it could be deemed off-topic here. Can you give some more information on the connection to photograophy? \$\endgroup\$ Commented Jan 26, 2021 at 11:01
  • \$\begingroup\$ I searched for a stack exchange with the tags display calibration and icc profile and then photo.stackexchange came up. Can you propose an alternative stack exchange site? \$\endgroup\$ Commented Jan 26, 2021 at 11:49
  • \$\begingroup\$ Most display calibration tools let you set the black point as well as the white point to specific luminous levels like low=.25 cd/m^2 and high=100 cd/m^2 in the created ICC profile. I don't know any simple manual ways to create an ICC profile. \$\endgroup\$
    – doug
    Commented Jan 26, 2021 at 15:31
  • \$\begingroup\$ What do you mean with display calibration tool? Some which communicates with the screen over HDMI? Do you have an example? \$\endgroup\$ Commented Jan 26, 2021 at 15:47
  • \$\begingroup\$ Calibration tool - search 'colorimeter'… though with the caveat that you need to be spending something like $£€ 200+ before they're worth having. \$\endgroup\$
    – Tetsujin
    Commented Jan 26, 2021 at 19:19

1 Answer 1


I have taken an ICC profile with some embedded vcgt calibration: http://fotovideotec.de/farbmanagement/downloads/testkalibrierung_blaeulich.icm. With https://github.com/KennethEvans/colormanagement I could reverse engineer pretty quickly this particular vcgt's function and hack a desired one into it with a hex editor.

  • \$\begingroup\$ If you still find the question unapproriate on this stack exchange site, you can delete it. The appropriate stack exchange site would be in my interest. \$\endgroup\$ Commented Jan 31, 2021 at 23:41

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