Color Combinations for the Web

Nostalgic
#CC0033 #33CC33 #333399
#993399 #FFFFCC #CC9999

Fresh
#FF6600 #CCCCCC #FFCC33
#99CC00 #000000 #669933

Earthy
#996600 #CCCC99 #669999
#CCFF00 #CC9933 #996666

Lively
#00FF00 #FF9900 #000000
#FFFF66 #333366 #FF6600

Energetic
#CCFF33 #9999CC #CC0033
#FFFF00 #000000 #993399

Calming
#333366 #99CC99 #999933
#99CC99 #000000 #990033

Classic
#000033 #999999 #000099
#000099 #9999CC #999999

Subdued
#FF9966 #FFCCCC #FFCC99
#666666 #99FFCC #CCFFFF

Refreshing
#66CCFF #FF99FF #FFCC99
#FFFF00 #CC00FF #66CCFF

Professional
#00CC99 #330099 #CCCCCC
#000033 #33CCFF #336633

Elegant
#CC66FF #FF99FF #FFFFFF
#FF00FF #FF6699 #000000

Many more color combinations can be found in the book Color Harmony for the Web by Cailin Boyle.