An object that does not reflect light that is at a constant temperature emits a spectrum of light according to Planck's law. At different temperatures the »


Here we take our spectral colour picker and plot the colours using the CIE xyY colour space. How much of the space can you explore? What »


A colour picker with a difference. Drag over the bottom half to paint a spectrum. The colour we perceive from light with these wavelengths at these »


Here you can move and resize two different spectra to see how the colours interact. Dragging left and right moves the position of the spectrum, up »


Hello, I want to do some experiments in colour. The way we usually treat colour in computer graphics is as a linear combination of red, green »