A nice vague category eh?
Getting this site back on track to it’s original vision of helping designers (sorry Gaz, you’re too geeky!), here’s a great article dealing with the problems of Macs displaying different shades of the style colour.
http://blogs.smugmug.com/onethumb/2007/02/14/this-is-your-mac-on-drugs/
I’ve been on the receiving end of a client seeing different colours from what I could see, and it’s very difficult [...]
http://kuler.adobe.com
A great new tool for mix and matching colours, creating swatches and sharing your swatches with other users, Kuler is a colour picker on mad drugs. All in Flash too…
Make sure you’ve got the latest Flash plug-in and go take a peek.
http://www.logoorange.com/color/color-codes-chart.php
http://www.jydesign.com/pantone/index.htm
A useful site for agreeing on a Pantone to hex colour conversion, as Photoshop can give very different results depending on colourspace and colorsync calibrations.
Still doesn’t get round the issue of different gamma settings on different monitors…