Spectral Editor

SpecEd allows you to work with visible light spectrum. It can compute CIE coordinate for any combination of spectral colors and convert it to sRGB. The program is distributed under the terms of GNU GPL version 2.


SpecEd showing spectrum of black body at temperature of 3000K. At the top left is the spectrum with relative intensities, at the top right is the CIE colorspace with final color displayed and at the bottom are values and colors after applying various transformations.

The spectrum is divided into two parts. The top one shows each color at relative intesity asigned to that color and the bottom one at relative intensity 1.

Click on the thumbnail for full size image.

SpecEd with spectrum of black body at temperature of 4100K. You can see mouse tooltip for spectral color and table with values at the bottom.


  • 2009-02-23: version 0.3 with gamma correction and gamut customization
  • 2009-02-15: version 0.2 with support for displaying CIE tongue
  • 2009-02-08: version 0.1 - initial release


I Attachment Action Size Date Who Comment
speced-src.tar.bz2bz2 speced-src.tar.bz2 manage 25.6 K 23 Feb 2009 - 15:36 PetrMalat SpecEd 0.3 source code
speced-win32.zipzip speced-win32.zip manage 5339.9 K 23 Feb 2009 - 15:39 PetrMalat SpecEd 0.3 win32 binary (with libraries)
speced.bz2bz2 speced.bz2 manage 62.5 K 23 Feb 2009 - 15:35 PetrMalat SpecEd 0.3 linux binary