True color.

Everyone will ask you if you've calibrated your monitor? So, have you calibrated your monitor. Until you do you have only a hazy idea what the colours in your pictures actually are.

After that, you might like to try calibrating your printer particularly if you aren't using the printer manufacturers own papers. I don't bother because I use the manufacturers papers and their associated colour profiles. Good enough for me.

Calibrating my monitor made an enormous difference to the accuracy of the colour of my prints to the extent that I now rarely throw away a print because the colour is wrong.

The only thing which is not to my satisfaction now is that the prints are, by default, too dark which is because my monitor is too bright. Fortunately, Apple's Aperture provides a fix for that at print out time.

I'm sure others more knowledgeable than I am will be along to expand on this.

IMO we have too few info about your workflow for troubleshooting.

Do you do some postprocessing in LR or PS, or do you print Jpgs straight out of the camera? Do you set a custom white balance? If you print straight out of the camera, it doesn't matter if your screen is calibrated, it would only reproduce a picture differently, but still print the same. It can also be a colour space issue. Some programs might not recognize an AdobeRGB tag (if that's what your camera is set to), and print like everything in the world is sRGB.

Still too much variables here, I'm afraid. On the other hand, purple is a very hard colour to shoot, so you might have just found the magic trick without knowing it :-)

oh and its not my printer or computer.

I have no idea what that means? Does that mean you think your camera is to blame? I agree with what everyone else has said. You need to develop a color managed workflow. And the first place to start is to make sure you have a monitor that is worth calibrating!

http://www.cambridgeincolour.com/tutorials/color-management1.htm
(link)

Could even be florescent dyes in the backdrop that respond to UV or visible light from the flash. There are florescent dyes that respond to visible light, they usually produce light in the red to yellow ranges when excited by shorter wavelength blue light. You can easily check by using a Macbeth color checker card. If your prints are a perfect match to the card and the backdrop is off, then you can suspect florescent dyes.

How do you white balance?

You need a white balance tool for your camera (outside of your color management workflow described above). A simple tip if you don't have an ExpoDisc type device for your lens: use a white (not tan) coffee filter (not the cones, but the ones with a flat bottom). I carry extras in my camera bag in case I forget to bring my ExpoDisc. Then set the white balance of your camera by placing the filter over the lens and using your camera manufacturers recommendation for adjusting the WB manually. It works about as well as my ExpoDisc.

No way to answer this without knowing your workflow. It could be any or all of the following: incorrect white balance setting on your camera; incorrect exposure; uncalibrated monitor; incorrect printing workflow; third-party ink; anomalous reflectivity...

I had trouble with accurate color until I did two things:

1. Got a ColorMunki and profiled both my monitor and my printer 2. Got an Expodisc and started using it to set my white balance, especially in difficult light

If you do both of these things, you'll virtually eliminate color accuracy problems.

I agree with you.

http://www.fashion4teen.com/