Question

In WebGL, we can associate a color with each vertex. If the endpoints of a line segment have different colors assigned to them, WebGL will interpolate between the colors as it renders the line segment. It will do the same for polygons. Use this property to display the Maxwell triangle: an equilateral triangle whose vertices are red, green, and blue. What is the relationship between the Maxwell triangle and the color cube?

Answer 1

The corners of the triangle are the primary colours; points along the triangle edges represent colours achieved by mixing 2 primary colours. Points within the triangle represent quantitatively the colours obtained by mixing the 3 primaries in varying proportions.The match can be written C ≡ aR + bG + cB, where C is the colour to be matched, R, G, B are the chosen primaries and a, b, c, record the amount of each primary. a, b, c, are the measure of the colour C. Multiplying a, b, c by a constant factor just changes the brightness of the colour so usually a + b + c = 1 is chosen in suitable units.In this way we can say that the relation between the Maxwell triangle and colour cube