CSSGram - Recreate Instagram filters with CSS filters and blend mode
Color Palette Generator - Enter the URL of an image and find its color palette
Brand Colors - A color collection available in sass, less, stylus and css
Color Hunt - Curated collection of beautiful colors, updated daily
Filtron - Create and share your own photo filters on Mac & iPhone
Coolors.co - The super fast color schemes generator! Create, save and share perfect palettes in seconds!