I'm not sure whether or not I can actually call this a success or not, but here it is.
I will say with confidence that this is the closest I've gotten so far to my target blue. Is it exact? Even making allowances for the difference in media and electronic interpretations, I have to say no. Can I get any closer? I don't know.
The recipe used the same color proportions as I used for the sample on the right (turquoise MX-G, 76%; red MX-5B, 10%; and black MX-CWA, 14%.) With that series of samples, I experimented with adjusting the amounts of fuchsia and turquoise. This lighter blue sample was the closest match to my cedar waxwing photo.
For this newest sample, I dyed the yarn to a darker depth of shade (DOS), in this case 8%. Previously, my samples were 4% DOS.
So, is 8% DOS dark enough to match the target color? From what I've read, the 8% DOS is considered "very dark" or "very intense." Can a darker DOS be achieved? I haven't found a reference to anything darker. Some of you with more dyeing experience will be able to answer that.
Other possible experiments could include trying a different red (MX-8B), or a different black.
My conclusions from these exercises so far, is that a color's computer hex code can be used as a starting point for dyeing with Procion MX dyes. However, the density of the dye powders effects their relative strength and has to be accounted for. Is there a specific ratio or some sort of formula for this? I don't know. Can one be developed? I don't know that yet either. Will I continue experimenting? Oh yes.
Posted 29 July 2008 at http://leighsfiberjournal.blogspot.com
Dye Recipes From Computer Color Codes: A Theory
Computer Hex Code Dyeing 1: Palettes From Pictures
Computer Hex Code Dyeing 2: Wrestling With Recipes
Computer Hex Code Dyeing 3: 1st Samples - No Joy
Computer Hex Code Dyeing 4: 2nd Samples - Getting Closer?