When combined with a little Cadmium Red, it produces an almost perfect grey. And I never would have thought of adding it to Magenta to get a lovely range of lavenders- but it works (column 9). I've concluded this is a very handy color to have on your palette.
The Holbein brand of Viridian seems to be particularly rich- that's my favorite brand for this color. Beware of paints labeled Viridian "hue". The notation "hue" on a paint label often indicates that the manufacturer has found substitutes to mix together to simulate the desired color. It can be similar (and is usually cheaper) but sometimes can be radically different. I've bought Cobalt Blue Hue before and it was more like a thalo blue than a true cobalt- so be careful with those "hues"
If this is your first visit to my blog, see the July 2011 Archives for other colors in this study. This is the last of the 12 basic color studies from the "official" color study plan, but this process prompted me to do a few other charts which I thought might be really useful, so stay tuned ( all will be posted by the end of July).