Skin Tone color corrections, CYMK or RGB?

[Ken Fournelle]

Duv,

I think you are pretty close, if not right on. Her cyan is 20% of Magenta.
And for this type of caucasian skin is in the 15-25% people recommend.

K

[Jann Lipka]

Proper skintones would be within 30 ( 0-255 scale )
units from each other in Adobe RGB .
R220 G190 B160 would make a nice caucasian skin color .
That what I've been told, and it comes close when converted to RGB .

[john_opitz]

Originally Posted by jayk2

Hello all,

I'm very interested in skin tone correction and have a question. Almost every tutorial and book says to edit skin tones using cymk and basically make sure the yellow reads 3-5% higher then Magenta. I work in Adobe RGB and wondering if that percentage rule applies only to CYMK? or can I apply that rule when using RGB?

I'm posting a few images from a shoot I had a few weeks ago and color corrected in RGB using the CYMK rules. Just wondering if I can get some ideas as to if the yellow percentage works in RGB, or if there's a different way I should be doing it? My work flow is unsharp mask, Levels adjustment, slective color adjustment (yellow and red only) and whatever color the backdrop is.

Thanks
Jay

http://www.tossthebox.com/clients/images/IMG_0228.jpg

http://www.tossthebox.com/clients/images/IMG_0368.jpg

http://www.tossthebox.com/clients/images/IMG_0433.jpg

This might be of help to you.

color recipe

You wiil have to sign up at "colortheory" group to get this page. Sign up is free.

colortheory list

This is in the "file" section of this group. This is an elite group on colortheory.
Like the Navy Seals of the armed forces.

[Jann Lipka]

john , what file on the color theory list is related to skin color ?

[john_opitz]

Originally Posted by jann@lipka.se

john , what file on the color theory list is related to skin color ?

Good Morning, Jann

The page gives you the ratios in rgb,cmyk, and l*a*b. The page gives ratios of different colors. If you just want to know just skintones. I will post the ratio for you as this is a known color.
Skin tones.... are yellowish red... this means..in cmyk...Yellow is the highest, (at the least equal) to magenta, cyan is the lowest of the three, cyan can be between 1/5 to 1/3 (sometimes 1/2) that of the magenta.

In rgb, this relates to the red highest, blue lowest, green closer to the blue.

In L*A*B, this comes to...the "b", highest and positive. The "a" more than half as high as the "b" and positive. The L can be anything. The L just sets your contrast, not color.

See the pattern here.



Their are no correct numbers for skin tones per say... they will vary in the subject. The important thing to remember is the ratios. Not exact numbers for skintones, as these will vary.

For more info on other skintone ratios of different cultures.

color by the numbers







Look for p100_revised.pdf
Revised version of the "Color Recipe Book" on p. 100 of "Professional Photoshop, 4th Edition" .


On the color theory list.