Coordinates, Indices and Spectra
See how colorimetric evaluations relate to perceptions, colorant properties, and processes. Learn which evaluations best support your quality goals by correlating to perceptual and physical properties.


Color as a Calculation
The CIE system: Coordinates, differences and dependencies
Spectral Curves: Fingerprints and Superpowers
Reflectance/Transmittance vs. Wavelength
Strength (K/S)/Absorbance vs. Wavelength


Choosing spectral vs. coordinate evaluations
Raw material & colorant properties
Measuring process variation


Two simple spectral evaluations techniques that can improve production color decisions
Qualitative assessment of curve correlation
Strength-adjusted color differences


Best Practices:
Raw Material Evaluation
Using Colorimetry & Spectroscopy for Process Analysis