shermae -
Quote:
Lightly, once you have the color info, which I assume is based on various saturations of RGB, how to you equate that digital info into a catalog number/color description?
That certainly is a pertinent question. A bit surprisingly, there is no answer to that question that one could buy.
I have some recent color Scott catalogs, and they mention names of colors in their catalog, but in a 1500-page catalog volume of stamps in color, there is not even one page that shows, for each of the color names they use, a 'color chip' next to each color name; e.g. gray green, dull green, greenish blue, brt pink, brt rose lilac, brt olive green, chestnut. I don't think they use hundreds of color names, so such a chart could be done on one or two pages. Very mysterious!
I did look at the Catalog pages on machins, by the way.
There's also the Wonder Color Guide and the Stanley Gibbons Colour Key. Neither of them include RGB, HSL, CMYK, or any other kinds of 3-dimensional color values.
So, this all seems rather oldschool to me, and not much of a help to people with one of the 7+ kinds of colorblindness who would like to enjoy collecting stamps a bit more than they already do.
I do have a Wonder Color Guide. I could use a color identifying app on each color chip in that, and get the RGB values and write them on each chip. Of course, I could not sell it or even give it away without getting into some kind of trouble.
I should mention here that RGB (red, green, blue) and HSL (hue, saturation, lightness) are schemes to measure
transmitted light, like from the Sun or other stars in the sky or from a computer monitor. For
reflected light, like from wall paint, color prints, or postage stamps, it's more common to use the CMYK color scheme (cyan, magenta, yellow, black).
In conclusion, shermae, I don't have a good, legal answer for your pertinent question.
I
could use a color measuring app to get the values from a stamp color gauge or key, and write the numbers on each 'color chip' for my own use.
Another issue is that the human eye-brain combination can see about 1 million different colors (100x100x100, 100 for each of the R,G, and B components, even though they are usually given values from 0 to 255 each). So, in reality, 1 million would be a very very large catalog of 'color chips'! The Pantone chart is 30x30.