Explanation

A small utility program in Python (pygame + numpy) to visualize the connection between spectrum and colors, executed in browser using pyodide.

The conversion from spectrum to color is taken from this Blogpost that is also a very nice explanation on the subject.

The left side shows a spectrum from 380 nm to 781 nm wave length with a 5 nm step.
The right side shows the resulting color from this spectrum.

The right side shows the resulting color from this spectrum.
The right side shows the resulting color from this spectrum.

• Number keys 1, ..., 9, 0: Set a spectrum that is emitted by a blackbody at temperature key * 1000 Kelvin (10000 Kelvin for key 0).
• r, g, b: Set a spectrum with color red, green or blue.
• c, m, y, k: Set a spectrum with color cyan, magenta, yellow or black.
• +, -: Change the position of the spectrum.

For more information view the code on GitHub!