RGB()

2017-11-03 09:05:09

Category: Text Formatting

Syntax: `RGB ( red; green; blue )`

Parameters:

redAny number or numeric expression containing a value ranging from 0 to 255.

greenAny number or numeric expression containing a value ranging from 0 to 255.

blueAny number or numeric expression containing a value ranging from 0 to 255.

Data type returned: Number

Description:

Returns a number that represents a color.

To calculate this integer, the red, green, and blue values are combined using the following formula:

(red * 256²) + (green * 256) + blue

Use the RGB() function in conjunction with the TextColor() function to format text.

If a number above 255 is supplied as the parameter, the formula in the example still computes a result. If the result of the formula returns a value above the expected 0 to 16777215 range, the Mod (result; 16777216) is used to map the result into the expected range. So RGB (255; 255; 256), which returns a value one higher than white, returns the color black, just as 0 does.

Examples:

Table 6.1 lists the RGB values of some common colors.

Table 6.1. RGB Values
Function	Integer Result	Color
`RGB (255; 0; 0)`	16711680	Red
`RGB (0; 255; 0)`	65280	Green
`RGB (0; 0; 255)`	255	Blue
`RGB (255; 255; 255)`	16777215	White
`RGB (0; 0; 0)`	0	Black
`RGB (24; 162; 75)`	1614411	Dark Green
`RGB (7; 13; 78)`	462158	Dark Purple
`RGB (23; 100; 148)`	1533076	Bright Blue

Table 6.1. RGB Values

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