The default colors used by matplotlib are rather bland. We might have our own preferences of what convenient colors are. We might want to have figures that follow a predefined color scheme so that they fit well within a document or a web page. More pragmatically, we might simply have to make figures for a document that will be printed on a black-and-white printer. In this recipe, we are going to see how to define our own colors.
There are multiple ways to define colors in matplotlib. Some of them are as follows:
Triplets: These colors can be described as a real value triplet—the red, blue, and green components of a color. The components have to be in the [0, 1] interval. Thus, the Python syntax
(1.0, 0.0, 0.0)will code a pure, bright red, while(1.0, 0.0, 1.0)appears as a strong pink.Quadruplets: These work as triplets, and the fourth component defines a transparency value. This value should also be in the [0, 1] interval. When rendering a figure to...