This application plots the colors of gold-silver-copper alloys on a ternary diagram.

A spreadsheet (attached to this workbook) contains experimental CIE xyY colorspace coordinates of gold-silver-copper alloys under a C illuminant with a 2° observer (Roberts & Clark, 1979). The color data is translated into the CIE Lab colorspace and plotted on a ternary diagram.

A ternary diagram is a non-standard Maple plot, but can be constructed using Maple's programmatic visualization tools.