These six opposition colors are the basis of all dark shadow colors when you don't use black pigment.
Cadmium Yellow Light and Cadmium Yellow Medium are opposite Ultramarine
Blue.
Cadmium Orange opposite Cobalt Blue .
Burnt Sienna opposite Cobalt Blue.
Opaque Cadmium Red Light or Dark are opposite Cyan which is called
Thalo Blue.
Quinacridone Magenta Transparent, PR122 only, is opposite Thalo
Green.
Purple and Yellow Green are opposite colors. Green Oxide Opaque
is dark yellow-green to use as the opposition color.
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are numbered within the 36 sections.
See all the photo chips of all 49 pigments, new window.. These colors are opposite and complementary Ultramarine Blue is opposite Yellow.
In this line of colors across the colorwheel from yellow to blue
we can find Cad Yellow, Indian Yellow Golden, Yellow Ocher, Indian Yellow
Brown, Burnt Sienna,
The is the same spectrum of colors that these crystals show,
Here is the actual pigment chip.
This is Yellow, Burnt Sienna and Ultramarine Blue chip.
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It's not the darkest combination of colors making a neutral dark but it has the widest latitude.
Here are those pigment chips.
Burnt Sienna mixed with Ultramarine Blue make a Burnt Umber hue. Adding a little more blue makes a neutral dark using Burnt Sienna.
Burnt Sienna and Cobalt Blue make a neutral dark.
Here are the actual pigments chip.
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Venation Red Oxide is a darker Cadmium Red, it mixes into a neutral dark also.
In it's transparent mass state Thalo Cyan Blue has an Ultramarine
Blue appearance.
BERYL, Be3Al2[Si03]6, H7.5,SG-2.7, hexagonal crystal system.
Double elements in yellow #1,[YYYY], cyan #9,[CCCC], red #3, [YYMM], and green #11,[CCYY], all standard colors. Yellow [heliodor], magenta [morganite], cyan [aquamarine] and green [emerald]. ALUMINUM in beryl excepts a lot of foreign chromates, just as it does in the corundum and spodumene compounds, Here an aluminum light trick is found in the aquamarine, light cyan is seen from one direction and deep cyan from a 90 degree off angle. These are the actual pigments.
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They make a lot of foreground darks in the early afternoon. It's a very dark medium dark.
These are the actual pigments.
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Transparent Purple and Opaque Green Oxide as the dark yellow green make this combination a neutral dark.
Here are the actual pigments mixed.
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Yellow and green are split complements of purple. Purple and green form the dark shadow colors in the distance.
The pigment chip.
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Now
when you see any local color in front of you will know which pigment to
shadow darken it with in the foreground.
It's
all natural, it's all good. Yum.
Here are the color mixes used to make different browns.

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