https://color.review/

• colors
• a11y
• accessibility

https://coolors.co/

• colors
• palette
• generator

http://labs.ideeinc.com/multicolour/

• images
• search
• colors

http://www.joehallock.com/edu/COM498/preferences.html

• colors
• preferences
• gender
• age

http://www.colorjack.com/sphere/

• colors
• palette
• color
• graphics

http://www.colr.org/

• inspiration
• flickr
• schemes
• color
• colors
• design
• colour
• palette
• scheme

http://beta.dailycolorscheme.com/

• scheme
• colour
• colors
• palette

http://www.colorschemer.com/schemes/

• color
• Design
• tools
• colors
• Webdesign