blue function
| Input type | Output type |
| color | float |
The blue function extracts the blue component of a color and returns it. Colors contain four components: red, green, blue, and alpha. To construct a color from the individual components, use the rgb or rgba functions.
Examples:
blue(rgb(1, 0.2, 0)) ; 0.0 blue(rgb(0.5, 1, 0.3)) ; 0.3 blue(hsl(4, 1, 0.5)) ; 1.0
See Also
red function
green function
hue function
alpha function
Writing direct coloring algorithms