One last blog for the day, in fact, it may be the last blog for a few days since I am taking a solo vacation to Sutton to do some hiking and relaxing. I am looking forward to painting trees, rocks, and water for a little while before getting back to the concrete, metal, and bricks. Poring over Handprint.com by MacEvoy, I learned that at least 4 paints I have are the same hue. That means they reflect a similar 'colour' of wavelength, the difference being the amount of light they are reflecting. In the figure, four paints are used, they are all considered to be approximately yellow-orange, which is the colour of traffic lines or some construction vehicles.
Part A shows two colour scales of raw umber (chocolaty), raw umber natural (toasted bread), yellow ochre (pea soup), and then isoindolone yellow (traffic lines), with various mixes. When they are put together like this, it is more clear that they belong to the same colour family. In part B, the four paints were mixed with each other to see all of the possible variations. In part C, the top row shows a colour scale of lamp black with the bright isoindoline yellow. in part C bottom row, the raw umber was mixed with the bright isoindoline yellow. Combining the bright version with darker paints reproduces a very similar range of oranges as seen with raw umber natural and yellow ochre.
In summary, there are paints that do not appear to be related at first glance, but they belong to the same colour family (i.e. hue). Furthermore, just using the brightest paint in the family along with black paint, or the darkest one, you can reproduce the intermediate colours. Thus, the main difference between the four paints is their value (lightness or darkness).
One more thing to consider is that each paint has special characteristics, like raw umber natural is transparent, while yellow ochre is opaque, which give them unique advantages.
9 x 12" watercolour paper ( B side of palette cleanser #8), July, 2020
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