If you specify a color that can't be displayed on your system, the browser will try to produce a similar color by dithering, or creating a textured background with elements of each of the two closest colors. Sounds nice, but it isn't; you end up with a pebbly background that can make your text completely unreadable. The trick is to use the so-called Internet-safe color choices, if you're specifying color with a hexadecimal value. It's pretty easy: just remember that each of the three basic colors (red, green, blue) should be chosen from 00 33 66 99 CC FF and you'll be fine. The following table shows a display of all the Internet-safe colors.
| #000000 | #000033 | #000066 | #000099 | #0000CC | #0000FF | #003300 | #003333 |
| #003366 | #003399 | #0033CC | #0033FF | #006600 | #006633 | #006666 | #006699 |
| #0066CC | #0066FF | #009900 | #009933 | #009966 | #009999 | #0099CC | #0099FF |
| #00CC00 | #00CC33 | #00CC66 | #00CC99 | #00CCCC | #00CCFF | #00FF00 | #00FF33 |
| #00FF66 | #00FF99 | #00FFCC | #00FFFF | #330000 | #330033 | #330066 | #330099 |
| #3300CC | #3300FF | #333300 | #333333 | #333366 | #333399 | #3333CC | #3333FF |
| #336600 | #336633 | #336666 | #336699 | #3366CC | #3366FF | #339900 | #339933 |
| #339966 | #339999 | #3399CC | #3399FF | #33CC00 | #33CC33 | #33CC66 | #33CC99 |
| #33CCCC | #33CCFF | #33FF00 | #33FF33 | #33FF66 | #33FF99 | #33FFCC | #33FFFF |
| #660000 | #660033 | #660066 | #660099 | #6600CC | #6600FF | #663300 | #663333 |
| #663366 | #663399 | #6633CC | #6633FF | #666600 | #666633 | #666666 | #666699 |
| #6666CC | #6666FF | #669900 | #669933 | #669966 | #669999 | #6699CC | #6699FF |
| #66CC00 | #66CC33 | #66CC66 | #66CC99 | #66CCCC | #66CCFF | #66FF00 | #66FF33 |
| #66FF66 | #66FF99 | #66FFCC | #66FFFF | #990000 | #990033 | #990066 | #990099 |
| #9900CC | #9900FF | #993300 | #993333 | #993366 | #993399 | #9933CC | #9933FF |
| #996600 | #996633 | #996666 | #996699 | #9966CC | #9966FF | #999900 | #999933 |
| #999966 | #999999 | #9999CC | #9999FF | #99CC00 | #99CC33 | #99CC66 | #99CC99 |
| #99CCCC | #99CCFF | #99FF00 | #99FF33 | #99FF66 | #99FF99 | #99FFCC | #99FFFF |
| #CC0000 | #CC0033 | #CC0066 | #CC0099 | #CC00CC | #CC00FF | #CC3300 | #CC3333 |
| #CC3366 | #CC3399 | #CC33CC | #CC33FF | #CC6600 | #CC6633 | #CC6666 | #CC6699 |
| #CC66CC | #CC66FF | #CC9900 | #CC9933 | #CC9966 | #CC9999 | #CC99CC | #CC99FF |
| #CCCC00 | #CCCC33 | #CCCC66 | #CCCC99 | #CCCCCC | #CCCCFF | #CCFF00 | #CCFF33 |
| #CCFF66 | #CCFF99 | #CCFFCC | #CCFFFF | #FF0000 | #FF0033 | #FF0066 | #FF0099 |
| #FF00CC | #FF00FF | #FF3300 | #FF3333 | #FF3366 | #FF3399 | #FF33CC | #FF33FF |
| #FF6600 | #FF6633 | #FF6666 | #FF6699 | #FF66CC | #FF66FF | #FF9900 | #FF9933 |
| #FF9966 | #FF9999 | #FF99CC | #FF99FF | #FFCC00 | #FFCC33 | #FFCC66 | #FFCC99 |
| #FFCCCC | #FFCCFF | #FFFF00 | #FFFF33 | #FFFF66 | #FFFF99 | #FFFFCC | #FFFFFF |