setalpha

A convenience package for setting and accessing web colors, adjusting the alpha levels of given colors and mixing new colors.

Demos

A little app that demonstrates color manipulation, component data, finding similar colors and setting alpha levels using setalpha.

A little combinatorics game based on Marsha Falco's game of Set; setalpha was used to color the pieces on the board.

Usage

Simple usage examples:

  • Get cornflowerblue with an alpha value of 0.5.
print(setAlpha(Color.cornflowerBlue, 0.5));

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  • Also works for other hex and hsl expressions...
print(setAlpha("#6495ED", 0.5));
print(setAlpha("hsl(218.54deg, 79%, 66%)", 0.5));

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  • Which web colors are nearest cornflourblue in RGB-space?
for (final neighbor in colorsNearestRGB(Color.cornflowerBlue, 3)) {
    print(neighbor);
}

cornflowerblue
mediumslateblue
royalblue
  • ... and in HSL-space?
for (final neighbor in colorsNearestHSL(Color.cornflowerBlue, 3)) {
    print(neighbor);
}

cornflowerblue
royalblue
skyblue
  • Let's mix 3 parts cornflowerblue with 2 parts maroon...
print(colorMix([Color.cornflowerBlue, Color.maroon], [3, 2]));

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Features and bugs

Please file feature requests and bugs at the issue tracker.

Libraries

setalpha