Notes from the Lab: Archive

Improved umber pigments.

This is an archived post from June, 2015.

Tri-Art recently improved upon our recipe for grinding our umber pigments. We are using the same PBr 7 pigments but are now able to develop the colour further. As a result Burnt Umber, Raw Umber, and all the mixed colours using these pigments will benefit from this development. This applies for all our acrylic colour lines.

The more efficient use of the pigment also results in:

  • Darker and richer umbers than previous batches.
  • More intense chroma.
  • Stronger tinting strength.
  • Higher staining.
  • Glossier finish.

The following colours will show a slight shift in their mass tone and undertone:

Burnt Sienna, Neutral Grey, and Viridian Hue.


There is the same ratio of solids to liquids with each line. The colours will maintain the performance and ability associated with their line.