What do the different colors of data indicate?
Use light colors for low values and dark colors for high values. When using color gradients, make sure that the bright colors represent low values, while the dark colors represent high values.
What are the best colors for charts?
In terms of graphs and charts, you may choose to use gray for less-important variables and a deep red or orange for the most crucial variable, for example. Alternatively, you could use muted colors for the less-important options and a bright color for the most important ones.