Originally Posted by Ellis Ammons
Trying to shade a yellow object. I cannot get the color right. all my mixes turn green when I add black or a Brown color if I add complementary color.
Has anyone had success with mixing yellow down so that the object stays yellow in the darker values? Maybe certain pigments or something?
Use the general rule to create a shadow. You need a deeper yellow, or the one you originally used without modification. Add a tiny amount of blue, and a tiny amount of red and work from there. If the mix turns green, you are using too much blue, you can also add Burnt Umber to the mix, always in small quantities to control the outcome.
Now, if you still can't get it right, try using other blues, French Ultramarine
Cobalt Blue, etc.
If all of the above fail, allow the object to dry and prepare the following glaze, but don't apply it till you have done a couple of tests on a piece of canvas:
Mix Cobalt blue + Burnt Umber + Permanent Alizarin Crimson. To this mix, add medium till you make it slightly transparent, there you have a glaze you can then try on a piece of canvas, if you are satisfied, you can then shade your object. Liquin Fine detail is ok as medium, I normally use Amber Painting medium though (which retains the pigments body).
Black is not suitable for shadows.