There are many good online color tools to explore and experiment
with. Like the tools on WorkWithColor, they are all free to use.
(It's a good idea to download
Firefox Portable
or
Opera USB for a better user experience).
Color Schemer:
COLOURlovers Copaso
Copaso is a palette generator with a color schemer using
a HSB color wheel. Put several colors on the clipboard
and then create your final five-color palette which you
can save and/or export.
wellstyled.com Color Scheme Generator 2
The Color Scheme Generator 2 uses a historical painters color wheel
for color picking and scheming. The preview feature is awsome and
there are a lot of options.
ColorJack: Sphere
The Sphere is a big HSB color wheel which is more comfortable
to navigate than small ones. You can switch to RYB color space
(historical color wheel) to experiment. The scheming options
can be found in a drop down menu.
kuler from Adobe
Flash9 based HSB color schemer and palette generator.
Color Calculator
Flash based HSL color schemer.
colorcombos.com toolset
Test color combinations, extract (css-)colors from external websites and more ...
ColorMixers
RGB sliders color schemer.
Color From an Image:
colr.org
Colr.org pulls colors from images or websites from which you can
build a individual color palette. Start with clicking on the "new
scheme" button, then click on the "+" rectangle to add a color.
DeGraeve.com Color Palette Generator
Generates a color palette based on an image and divides colors into
a dull and a vibrant palette.
Average Photo Color
Calculates the average color of a photo.
BIG HUGE LABS Palette Generator
Extracts colors from an image and shows color names if available.
Color Picker: