13.7.4 Using Web-safe colors

It is best to use Web-safe colors for HTML; otherwise you could run into browser palette issues. For example, if you do not specify a Web-safe value for Netscape, you get white. Because there are only 216 Web-safe colors, you are almost certain to have to redefine any colors you added to FrameMaker. However, the FrameMaker default colors are all Web safe.

For Web-safe colors that are rendered the same by all browsers, use color numbers 1 through 8, or define colors with elements of 00, 33, 66, 99, CC, or FF, which correspond to levels of 0%, 20%, 40%, 60%, 80%, and 100% in FrameMaker RGB settings. For example, RGB hexadecimal value 0099CC yields the color shown in Figure 13-2.

Figure 13-2 RGB color 0099CC

 

Table 13-3 lists the values you can use to define Web-safe RGB colors, in three different units of measurement.

Table 13-3 Ways to express Web-safe RGB color values

Units	Web-safe values for Red, Green, or Blue						Where used
Percent	0%	20%	40%	60%	80%	100%	FrameMaker color definitions
Hexadecimal	00	33	66	99	CC	FF	HTML; Mif2Go [Colors]
Decimal	0	51	102	153	204	255	Windows, some applications

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> 13 Converting to HTML/XHTML > 13.7 Defining and mapping colors for HTML > 13.7.4 Using Web-safe colors