Blue PB29
Ultramarine Blue
Synthetic inorganic pigment from the polysulfurized sodium aluminosilicate family.
Perfectly stable in the light, and relatively opaque, this blue, which tends toward violet, can be found on the palettes of almost all watercolorists.
It granulates and also causes the colors that it is used with to granulate. Its unique shade and its granularity make it particularly interesting.
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