HTML and XHTML Colour

Colors can be represented either as a six-digit hexadecimal value following the character "#", or by the "HTML Color Name".  For example, the general background of this page is the HTML Color Name defined as "Azure".

The XHTML 1.01 standard defines a very limited range of 16 Color Names, whereas the six-digit hexadecimal value is unrestricted in range.  In the detailed list, Color Names are shown with their hexadecimal equivalents and are exhibited in approximate order of overall colour intensity, from lightest to darkest.

The HTML 4.01 standard defines a wider range of 141 Color Names - and of course supports the unrestricted six-digit hexadecimal value representation of colours.  In the detailed list, Color Names are shown with their hexadecimal equivalents and are exhibited in approximate order of overall colour intensity, from lightest to darkest.

The Color Contrast page illustrates the contrast effect of coloured text against a coloured background, suggesting combinations might be more suitable than others.

 
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John Goodman