Can you tell Facebook's blue from Instagram's blue? Know your Twitter from your Dropbox? Test your skills using my latest hack:
Name That Blue
http://colin-gourlay.com/namethatblue/
Most of the hex values are sourced from http://brandcolors.net/ (thanks @galengidman!), but I'm slowly adding others to make the challenge more engaging.
I'd love to know what you think! Thanks