All these charts use Humbrol paints as the bench-mark, so if you want to convert from Heller to Vallejo then you'll have to go via Humbrol.
I have tried to be as accurate as possible but I have to point out that the conversions and the colours used in the charts are to be used as a guide only as it is impossible to be totally accurate for several reasons mainly because monitors, printers and the good old fashioned human eye vary so much. Anyway, I hope these prove useful to you.
Click on the logo for the brand you wish to view (Revell, for example) and you'll see a two charts, one converting from Revell to Humbrol and one converting from Humbrol to Revell. If the image is too small then just click on it to zoom in.
