The 0%, 50%, and 100% values in the above tables are "should-be" values. However, the real hardware doesn't exactly match that intensities. The actual intensities depend on the luminance mixing (R,G,B tied together via resistors), on chipset (classic CPC, or newer ASIC ones), and on the load applied by external hardware (Monitor, or TV set).
* [[CPC Palette]] - some more details
On the Plus, Amstrad engineers converted the values of the R, G, and B subcomponents to a new 12-bit palette using a 4-bit scale:
* 0% became #0
* 50% became #6
* 100% became #F
<br>