red function
| Input type | Output type |
| color | float |
The red function extracts the red 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:
red(rgb(1, 0, 0)) ; 1.0 red(rgb(0.5, 1, 0.3)) ; 0.5 red(hsl(0, 1, 0.5)) ; 1.0
See Also
green function
blue function
hue function
alpha function
Writing direct coloring algorithms