This term means that the colors used are Netscape and Internet Explorer Palette Compatible. Certain colors are used by a browser when a computer does not support all the possible colors that may be in an image on the web. This is best seen when a photographic image jpeg is viewed on the web on a computer that supports only 256 colors (8 bit color). The image will look stippled with pixels of the available color (dithered) rather than the smooth continuous tone of higher resolution computers with millions of available color (16 or 24 bit color). The two most common browsers (Netscape and Internet Explorer) use a very similar palette. most of the colors are exactly the same and can be depended on not changing color when viewed on any machine supporting at least 256 colors. This is where we come up with the browser safe palette below.
Thanks to Joe Maller we have this great organization of the browser safe colors. (some colors repeat, there are 216 total)
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