Imagemagick not creating correct color

问题

So I when I rung this command:

convert -size 32x32 xc:transparent -fill "#ff0000" \
        -draw "circle 15,16 8,10" png32:"/Users/rzec/test test.png"

a round circle is created however the color is not FF0000 but it is #FC0F1D. Is there any reason this would happen?

Interestingly, if I use FFFFFF that is the color that is generated.

I am running Mac OS X 10.9 and ImageMagick 6.8.7-7 Q16 x86_64 2013-11-27

来源：https://stackoverflow.com/questions/24862041/imagemagick-not-creating-correct-color