Question: How do I use hexadecimal codes to define colors for portal Web pages?
Answer: Defining a color that conforms to your company's color scheme can often be performed by just typing in the name of the color, if the color name is something as simple as black, white, red, blue, yellow, etc. However, with complex color requirements, you may need to use a hexadecimal code, which is something that the Web browser will be able to understand.
The hexadecimal (base 16) number system used for Web-page design consists of 16 unique symbols: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E, and F.
The red, green, and blue (RGB) color system can represent a large portion of the color spectrum by mixing these three primary colors. Since cathode ray tube devices, such as computer monitors, display color with red, green, and blue light, this is the color system of the Web. There are 216 RGB colors that appear without dithering (i.e., without varying the pattern of dots in an image) in browsers for the Windows and Macintosh platforms.
In HTML, an RGB color can be designated by RRGGBB with the first two numerals representing the amount of red, the second two the amount of green, and the last two the amount of blue. For example, if you wanted a table's background color to be red, you would type:<bgcolor="#FF0000">.
Black is the absence of all color and white is the presence of all color, so in hexadecimal, black is at the bottom of the system (no red, green, or blue: #000000) and white is at the top (the maximum amount of red, green, and blue: #FFFFFF).
NOTE A color codes chart will be provided to you via email if a request is made to support@apprise.com. The document is in an HTML format, and can be viewed by your default Web browser (it is best viewed with Internet Explorer).