A few important things to keep in mind as you create graphics and assets for your websites....
Color Bit-Depth is calculated as follows:
| 32-bit | 16.7+ million colors plus an 8-bit grayscale mask |
| 24-bit | 16.7+ million colors |
| 16-bit | 65.5 thousand colors |
| 8-bit | 256 colors |
| 7-bit | 128 colors |
| 6-bit | 64 colors |
| 5-bit | 32 colors |
| 4-bit | 16 colors |
| 3-bit | 8 colors |
| 2-bit | 4 colors (includes black and white and 2 colors) |
| 1-bit | 2 colors (black and white only) |
This is what the 216 brower safe palette can do to a logo.
Here's the palette with the hex numbers. And here it is in all its glory Units of measurement on the Web are weighted according to bits and bytes:
8 bits= 1 byte
1,000 bytes= 1 kilobyte (kb)
1 million bytes= 1 megabyte (mb) ( or 1024 kb)
1 billion bytes= 1 gigabyte (gb)