A more human friendly way to declare colors is to use the
hsl format which is:
hue, saturation, lighting. These are values that are easier for us to guess and use.
hue represents the angle of the color circle which can be specified with any
angle type. By default, a numeric hue represents a deg (degrees). You can imagine how hue works in this case by imagining that you’re in the middle of a color wheel and you’re looking towards the red color. Red represents 0 deg, green represents a 120deg turn and blue represents a 240 deg turn.