I recently discovered that another artist, Jonathan Linton also tested whites and his results were almost the same as mine! The problem, as far as yellowing goes, seems to be the oil used. Linseed oil dries faster than the other commonly used oils, but it also yellows more. And if it is combined with a more transparent white pigment, like zinc or lead, the yellowing is even more apparent!
WHITES TESTED:
Gamblin (Artist Oil Colors)Quick Dry White
Zinc White (Linseed)
Titanium White (Linseed)
Titanium-Zinc White (Linseed) I have a new tube of this color, and it is now made with safflower oil.
Radiant White (Poppyseed) Gamblin now uses safflower oil for this one.
Le Franc (Artists Oil Color)
Titanium White (Soybean)
Rembrandt (Artists' Quality)
Zinc White (Safflower)
Mixed White (Safflower)
Titanium White (Safflower)
Utrecht (Artists' Colors)
Titanium White (Linseed and Safflower)
Grumbacher (Pre-Tested Artists' Oil Colors)
Soft Titanium White (Poppyseed and Sunflower)
Vasari (Classic Artists' Oil Color)
Titanium White (Linseed)
Flake White (Linseed)
M. Graham (Artists' Oil Color)
Titanium White (Walnut)
Blockx (Artist Oil Colors)
Titanium White (Poppyseed)
Permalba (Artist Oil Color)
Original White
Winsor & Newton (Artists' Oil Color)
Flake White #1 (Safflower)
Winsor & Newton (Griffin Alkyd)
Titanium White
Winsor & Newton (Winton Oil Color)
Soft Mixing White (Safflower)
Flake White (Safflower)
Art Spectrum (Artists' Oil Color)
Titanium White #2 (Safflower)
Holbein (Extra Fine Artists' Oil Colors)
Silver White
Ceramic White (Poppy)
Daler-Rowney Georgian
Mixing White
The Results
Still bright white!Le Franc Titanium
Rembrandt Titanium, Mixed, And Zinc Whites (this was the only zinc white that stayed bright)
Utrecht Titanium
Permalba Original
Blockx Titanium
Holbein Ceramic
Art Spectrum Titanium #2
Kinda soft white: still acceptable
Winsor & Newton Flake #1
Winton Flake and Soft Mixing White
Winsor & Newton Griffin Alkyd Titanium White
Holbein Silver White
Gamblin Titanium, Titanium-Zinc
Grumbacher Soft Formula
Not acceptable, sorry guys...
Daler-Rowney Georgian Mixing White
Gamblin Quick Dry
Gamblin Zinc White
Gamblin Radiant White
Vasari Titanium White
Vasari Flake White
This is supposed to be white? It looked even worse when I first took it out of the dark. All colors were allowed to bleach in the light for a month before I photographed them.