Colour wheel update

Having a few days away painting the other week gave me a chance to "fine tune" my colourwheel, as I discovered a few pigments were slightly displaced. It is also clear that the chroma contours in the orange, red and magentas sections need altering for the mid range so they are more circular and less biased to the centre.  As it will be a while before I repaint this, I post these corrections, along with a few test cards I did as an "aide memoire".

The perylene pigments all need to be moved closer to the centre of the colourwheel. Perylene Maroon by one-and-a-half contour lines, P.Violet by one line, and P.Green by half a line.

WInsor Blue (green shade) and Winsor Green (blue shade) both need moving away from the centre by one line (ie by 10% chroma). Winsor Blue(gs) also needs to be moved by about 5 degrees towards green.

Although Thioindigo Violet is not in my main palete (since the pigment is no longer available), I retain it in my secondary palete for mixing interesting greys with Perylene Green, and using it for tanned flesh mixture. It should be moved half a chroma contour line towards the centre.

Winsor Orange (red shade) should be moved one-and-a-half lines towards the centre, level with Winsor Red. I will probably discard Winsor Red Deep from my palete as its chroma when dry is overstated on the colourwheel and the hue and value can be replicated by mixing adjacent pigments. Gold Ochre retains a specialist role in landscape/seascape painting in dilute form as Raw Sienna is not used, being a convenience pigment mixture in the Winsor & Newton range.

My test cards explore various types of green and flesh hues, as well as using Quinacridone Magenta with Winsor Blue (green shade) as a very good sky combination which is a much more even wash than using French Ultramarine and gives the green-blue tones in the mid sky much better.

I remind you that my colourwheel is painted on Arches 140lb unbleached paper (cold pressed) which has a slightly creamy hue. Some adjustments are needed if you use a bleached or whitened paper.