| Web Safe Colours Here is a chart of 216 web safe, or 'non-dithering' colours. What this means is that the colors will look correct on all browsers and all computer screen resolution settings assuming a video colour capability of at least 256 colours. Tests have shown that Internet Explorer used in the Windows platform does not properly render four of these colors and they are marked with an asterisk (*). Note: If your monitor is misaligned, your colours may appear dull or too bright. Click here to view utilities on monitor setup. What is Dithering? We've all seen colours created by what appeared to be one solid colour and then a few lighter coloured dots blended in. The colours may look blotchy or just full of dots but not a solid colour. We have seen the same problem when printing things as well. Some colours are made up of multiple colours sprinkled together so that your eye blends or dithers the colours, so that you see only one. Unfortunately with some of the resolution and colour settings used we don't see the intended blend, but rather the dots and splotches. It comes from placing the dots together and not truly mixing them. The colours in the following chart give smooth colours on web pages because these are the 216 colours used to make up the Windows and Macintosh colour palettes. All the other colours are achieved by mixing or dithering these colours. The numbers shown in each colour swatch are the hexadecimal numbers you need to use in your web page to display the corresponding colour. Note that each one is made using the hexadecimal values 00, 33, 66, 99, CC, and FF which represent corresponding intensities of the three primary colours RED, GREEN, and BLUE. The value 00 represents a total absense of that particular colour and the value FF represents all you can get of it. Hexadecimal is a numbering system used with computers and provides a way to represent the values formed by four bits at a time with two hexadecimal values representing 16 bits. In hexadecimal you count 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E, F.
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