Useful Color Data

These files are available for download. If you are not able to read Microsoft Excel format, click the links for the HTM files, and use your browser to save the files in text format.

CIE Standard Colorimetric Observer Data, provided from 380nm to 780nm, sampled at 5nm

• 1931 2° CIE Standard Colorimetric Observer Data
• 1964 10 °CIE Standard Colorimetric Observer Data
• Excel spreadsheet (Due to rounding, this file is slightly different from the html)

CIE Standard Illuminant Data

• CIE illuminants A and D65, 300nm to 830nm, sampled at 5nm (Excel)
• Excel Daylight Series Calculator: use the CIE method to calculate relative spectral power distributions for your choice of Correlated Color Temperature
• CIE Fluorescent series: F1 to F12, 380nm to 730nm, sampled at 5nm (Excel)

Full set of 1nm data, includes all of the following:

• Illuminant A
• Illuminant D65
• V_M(λ) 1988 Spectral Luminous Efficiency Function for photopic vision
• V'(λ) Spectral Luminous Efficiency Function for scotopic vision
• 1931 2° CIE Standard Colorimetric Observer Data
• 1964 10 °CIE Standard Colorimetric Observer Data
• Excel with all of the above

Spectral Data for Commonly Used Color Products

• These are NOT standard CIE data, but they are useful for many applications in color and spectral imaging. Additionally, these data are not standardized for the repective product. These data are actual measurements of products in the Munsell Lab or related organizations.
• Macbeth Colorchecker (Excel Spreadsheet)
• CERAM Series II tiles (Excel Spreadsheet)

Code for CIE Color Difference formula CIEDE2000

Note: The above code was debugged to match the output of the Witt spreadsheet.

• These are NOT official CIE code, and are not sanctioned or guaranteed in any way.
• Excel Spreadsheet, originally provided by Dr. Klaus Witt, BAM, Germany
• Matlab code
• IDL code
• Visual Basic code, intended to be used as a macro within Excel.

Pointer Data Set

• This spreadsheet is available by permission from Dr Michael Pointer. These data are those on which the often cited paper was based. The original article is "The Gamut of Real Surface Colors", M.R.Pointer, Color Research and Application 5 (1980).
• Excel Spreadsheet, as provided by Dr. Pointer

CIE 170-1:2006 Cone Fundamentals for Various Field Sizes and Observer Ages

• Excel Spreadsheet to Compute Cone Fundamentals (Color Matching Functions) in Terms of Energy for 5nm Increments
• Matlab code matching the above spreadsheet. (Required files: Alms.txt, RelativeMacularDensity.txt, docul.txt)

Planck's Blackbody Equation Enumerated

• Excel Spreadsheet to Compute Blackbody Spectral Curves
• This spreadsheet is provided as a courtesy. It was derived form wikipedia.com articles in March 2010. The plot makes a nice picture. If you plan to do real science, we suggest you verify the calculations yourself.