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Colors are displayed combining RED, GREEN, and BLUE light sources. Color ValuesCSS colors are defined using a hexadecimal notation for the combination of Red, Green, and Blue color values (RGB). The lowest value that can be given to one light source is 0 (hex #00). The highest value is 255 (hex #FF). This table shows the result of combining Red, Green, and Blue light sources:.
Color NamesA collection of color names are supported by newer versions of both Netscape and Internet Explorer. Note: Color names are not supported by the W3C standards. If you want to write correct CSS you should use the Color HEX values.
Web Safe ColorsA few years ago, when most computers supported only 256 different colors, a list of 216 Web Safe Colors was suggested as a Web standard. The reason for this was that Microsoft and Mac operating system used 40 different "reserved" fixed system colors (about 20 each). We are not sure how important this is now, since more and more computers are equipped with the ability to display millions of different colors, but the choice is left to you. 216 Cross Platform ColorsThis 216 cross platform web safe color palette was originally created to ensure that all computers would display all colors correctly when running a 256 color palette.
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