The best weapon in your arsenal is a designer (human).
I built a theme using a palette from colorcombos.com, and thought it was just great. When I suggested the same colours to have a logo created, the designer I worked with tweaked them without even asking.
When I applied the new colour to the website, it knocked the wind out of me. Some people have the gift. There's no replacement for an artist who understands what you're trying to express.
She managed to change the way I feel about my own project.
Well, these are merely tools. Just like every tool, the user must be able to judge and finetune the output, and re-adjust when needed. At the very least, using such tools you won't be hurting anyones eyes. But you possibly won't be taking any awards either.
I agree. When human designers are not around, however, and I urgently need a 5-color diverging, colorblind safe, print friendly palette, I go to http://colorbrewer2.org/
I built a theme using a palette from colorcombos.com, and thought it was just great. When I suggested the same colours to have a logo created, the designer I worked with tweaked them without even asking.
When I applied the new colour to the website, it knocked the wind out of me. Some people have the gift. There's no replacement for an artist who understands what you're trying to express.
She managed to change the way I feel about my own project.