What are RGB values for Geneva Essential pallette (Bismuth Yellow, Pyrrole Rubine, Burnt Umber, and French Ultramarine)? I would like to try mixing colors in painting software using this pallette and it is requred to have exact data for these colors to define color swatches.
I'm assuming that the mixing behavior of the colors shouldn't change much and if it works for real colors it's quite possible that it will work within the limits of how the program is capable of doing it.
0 ·
Comments
No software program you own will properly mix paint colors to correctly simulate the way paints mix when one mixes colors on a palette.
With real oils:
Reds + Greens mix to produce neutral grey, this is true also for orange + blue, and yellow + purple.
The main issue is that digital color spaces are either purely additive (monitors) or subtractive (printers), and specifically RGB, or CMYK.
Real pigments and how light is transmitted and reflected does not follow the simplistic color models used to store color information. Although you can reproduce anything using digital color models, the simplistic use (linear combinations) of the component color space vectors (RGBCMYK) cannot serve to model the behavior of mixing pigment.
Some software can model the production of green when blue and yellow are combined (in digital color spaced normally you get grey from blue and yellow).
So you will never get a good idea of what mixing real oils would be like using software. IMHO
I agree with CBG on this issue.
These colour swatches were screen shots from the Geneva website.
The RGB values are in the first column.
Ignore the colour name the app applies to the last three colours.
Denis
PW6 (Titanium White), PY184 (Bismuth Yellow), PR264 (Pyrrole Red Dark), PB29 (Ultramarine Blue), and PBr7 (Burnt Umber)
https://www.goldenpaints.com/mixer
Thanks for sharing. Never met this software before. Photograph Analyzer? Is it on Mac?
I think those images weren't properly exposured so the resulting values are hardly true.
Can’t see the Photograph Analyser listed in the App Store offerings anymore. However, similar Apps exist, try this one.
Denis
IMAGE COLOR SUMMARIZER - free and web based.
@Dencal, that's only for iPad.
@Andre, I searched IMAGE COLOR SUMMARIZER. What I found was a command line tool — there is no interface. There is no support to get the software going which is fair enough because it's free. But only of use to young tech geeks
By any other name would look as subtle and lovely;
So Bistre would, were it not Bistre call’d,
Retain that dear perfection which it is
Without that label. Oh, colors that shineth, shed thy names,
And for those names which are no part of thee,
Take all joyous vision reflected in our eyes back unto thee!
(Anon2 and Shakespeare)
http://mkweb.bcgsc.ca/color-summarizer/?analyze
Denis
OK. So check out your App Store for Microsoft or Android. There must be equivalent colour analysers for those operating systems.
In 2017, there were 728 million iPhones in the world.
Between the time it started production and 2018, the company sold 2.2 billion iPhones.
Hmmm….
some differs quite noticable, for instance, amsterdam oils burnt umber vs winton's burnt umber
So a burnt umber will look somewhat different although not erroneously so, on different calibrated monitors.
But that is ok because, even pure burnt umber looks different, depending upon lighting. Indoor lighting can be cool or warm depending upon the combination of light bulbs and any light streaming in through a window. Cloudy days, versus sun streaming in, versus only blue sky visible through a window, will change the tone of light throughout a room, even with artificial lighting... and of course the value of "burnt umber" is entirely relative... in blinding light it can be blinding.
I think the numbers can be used if they are mostly relied upon only for relative color and relative value (not some kind of absolute), i,e, when all were "measured" by the same lab or source using the same techniques, and all are to be presented, used, or viewed in a single monitor or studio setting.