A Japanese artist paints Tibetan Thangkas in Spain.
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Moroccan Indigo - Color trial
To try and see the tone of the Indigo I've received from Morocco, Here is the color comparison of different Indigos.

Painted with more layer from right to left.

Sui-hi is dyed mud pigment from Japan.

"w/water" indicates that the pigment is mixed only with water and "w/glue" indicates it's mixed with glue solution.
This is to check the fixation strength.

We can see that the Moroccan Indigo is a little brighter compare to Sui-hi "Ai" and much brighter than Indian one.
And not as bright as Nepali one(this is synthetic Indigo).

About syinthtic Indigo, I've heard once from a pigment shop in Japan that there is not big differrence between natural and synthetic Indigo. Even the chemical composition of those two are same(or very similar).
Now the image below is the same one as the first one but made much brighter so that the differrence between each Indigos are more obvious.

Here we can see the Moroccan Indigo is much brighter compare to Sui-hi "Ai". Also Nepali Indigo is more clear or pale than Moroccan specially when we compare the light part of the color.

Indigo is one of the colors used most in Thangka painting.

Many Thangka painter use only one kind of Indigo but if it's possible the best is to prepare two differrent tones of Indigo. In any case, we should choose carefully because the tone of this color could change the impression of the Thangka entirely.


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