Tools Below are some tools useful for comparing color and testing various systems. Most are Excel spreadsheets
Spreadsheet for calculating Delta E (∆E) color difference
Template for Gretag Measuretool Monitor Calibration test image
MIF for loading ISO 12647 values in X-Rite 5xx handheld
Links Tools and test images, including the latest GRACoL forms see Don Hutchinson’s Site Color calculators see Bruce Lindbloom’s Site