Colors that I've used in my android app seems really different in different devices. So is there any color collection that is exactly same in different devices?
Do web safe colors do same work in android?
Thanks
The concept of "web-safe" colors is long outdated:
http://en.wikipedia.org/wiki/Web_colors#Web-safe_colors
The only reason they existed was to deal with the problem of some devices / displays not being able to display 24-bit color (0-255 red, 0-255 green, 0-255 blue).
All modern devices that you'd even care about developing anything for support 24-bit color.
Now, you will run into a different problem where the same color value (something like 0xD4D0C8) will look different on different devices and displays. There's not really anything you can do about that. Certain colors won't be more consistent than others.
Personally, I wouldn't really worry about that too much, unless you're writing an app or something that specifically deals with color matching or something similar. In that case, you'd probably want a way to calibrate the device to some standard, but I doubt that would be necessary.