Hi,
Hendrik Boom <hendrik@???> writes:

> On Wed, Jan 19, 2022 at 02:08:12PM -0700, Bob Proulx via Dng wrote:
>> golinux@??? wrote:
>> > Lars Noodén wrote:
>> > > What quality of display(s) and color calibration are required?
>> >
>> > In all the years I have been doing this, that question has never entered my
>> > mind and I have no idea how to even begin answering it. I do "eye" art not
>> > "machine" art. I can perceive even one increment change in a hex.
>> >
>> > Problem is . . . no one can know exactly what color another person is
>> > seeing. Add to that the vagaries of the monitor and . . .
>> >
>> > I don't know if a screenshot would capture the hex or what's showing on your
>> > monitor but maybe you could give it a try for the chimaera desktop and let
>> > us have a look.
>>
>> I just want to comment that I have two identical model displays side
>> by side in a dual monitor configuration on my desktop. Both are
>> identical as far as any model vendor and number are concerned. Yet
>> side by side it is pretty obvious to me that they have a difference in
>> color tone between them. They are definitely not the same even though
>> by specification they will be the same.
>>
>> The first order difference in my two monitors I think is that the
>> backlight is not identical between them. One shows a slightly warmer
>> color hue to the backlight from the other. I think that swamps other
>> effects causing differences in my "matched pair".
>>
>> None of this really has any effect on how nice a color theme looks on
>> the displays though. That's an art project more than a science project.
>>
>> Bob
>
> It's nice if the desktop colours look good on a perfectly calibrated monitor.
> But what's more important for it to look good on the variety of monitors
> regular users use.
> So we should test the imagery on the ordinary, everyday laptops and
> monitors we have at home and work.

Agreed. I would also like to add that colour perception is influenced
by ambient light so it isn't even a display issue. On my wide monitor
I perceive the same hex-value colour differently on the left and right
sides (because half is in front of the window and the other half has a
wall behind it).

> And it's important the the colours work even if one is colourblind.
> I'd suggest viewing it converted to greyscale as a first try at testing
> this, bt a friend of mine who is colourblind tells me it's far more
> complicated than this.

Yup. Red/green colour blindness is most common but there are many more
varieties and some involve more than two colours. A greyscale version
is a good first approximation to check whether colours can be told apart
in case of colour blindness.

Hope this helps,
--
Olaf Meeuwissen                    FSF Associate Member since 2004-01-27
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