The left side of the brain designs color wheels for the right side of the brain to acquire skills for use as an artist. Logic doesn’t always produce the results that the left side of the brain predicts.

An "I should have known that" moment

Although the colors of the images I post are not true to the actual color wheel due to my scanner and my processing of the images, it is still obvious that the values of the colors are not falling into place as I had planned.  I tried to keep the colors working from cool to warm / warm to cool, as is most familiar, while simultaneously presenting the colors by light to dark / dark to light.  What I love about creating these wheels is that I learn, either as a reminder or as something new, more about mixing colors and why I have encountered problems in the past when nixing pigments.  For me, learning more about the science of color and light has helped enormously.  Still, my left side of the brain refuses to get with the program.

I knew, based on previous color / value charts that the Manganese Blue would have to be moved to the other side of the greens.  Apparently I had applied both Viridian and Permanent Sap Green in a thicker layer on my original chart.  In this chart, the transparency of the pigment altered the value of the pigment and Sap Green appears darker in value than Viridian, something I will remember when painting. The second alteration that should have been made was the switch of the purple hue that results from mixing Alizarin Crimson with French Ultramarine Blue.  Of course it will be a darker value!  Even the left side of my brain should have known that. More light waves are being absorbed, or canceled out, resulting in a hue of darker value.

Another observation to be made by actually creating the wheel rather than just studying mine is the muted hue that results when the Cadmium Red Light is mixed with the Alizarin Crimson.  Why?  Because all three primaries have been introduced, neutralizing the color mixture.  Alizarin Crimson has red and blue.  Cadmium Red Light has red and yellow.  When all three primaries are present, a bit of everything is absorbed, resulting in a more neutralized, less saturated color.