Like everything else on this site these come with NO guarantees and NO free support. Use them at your own risk.
Updated March 2006

Spreadsheets and charts
Useful Formulae (28 K .xls)
Some handy color conversion formulae derived primarily from "Measuring Color" by Robert Hunt. NO GUARANTEES OF ACCURACY - any errors are probably ours, not Hunt's. Buy the book if you want to be sure.

Formulae

For additional color science math visit http://www.brucelindbloom.com

RGB coords (132 K .xls)
Play with phosphor coordinates and visualize them on a CIEY,x,y diagram. Compare the gamuts of different RGB working spaces. You will need some fluency in Microsoft Excel to use this.



Added March 2006: "Ekta Space PS5, J. Holmes" (copyright 1998, Joseph Holmes, http://www.josephholmes.com). Follow the link for Joe's informative Read-Me and magnificent web gallery.

Back to top

PQM chart (96 K PDF)
Track the performance of any color printer or proofing system with this 11" x 17" PDF chart. Plot daily readings with colored pens of mid-tone gray balance and density.
For use with HCProof Qualifier.tif

Back to top