The dry pigments clearly show differences but I've learned not to put much stock in dry appearances. All images are with Irgazine Ruby (PR264) on the left; Alizarin Crimson (PR83) on the right.
Although blurry, I think when the autofocus got confused with the glass palette, the colors seem closer.
|Pigments mixed with egg medium|
Here the colors seem to veer off with the PR83 leaning a bit towards blue. Still, seems pretty close.
|Test strip. |
Mixed pigments diluted with water
on the top half and titanium white below.