How do you calculate the average of two (or more) colours?

From InI about doing it manually:

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Yes, easy, turn them to decimal, then compute the average, and turn them back to hex =)

For instance: FF = F*16+F = 15*16+15 (F being 15 in hexadecimal notation).

Or: AE = A*16+E = 160+14 = 174

And so on...
To understand this, try the same with decimal numbers:
140, for instance, = 1*10^2 + 4*10^1 + 0*10^0 (^ meaning "exponent").
Or binary, 101 = 1*2^2 + 0 * 2^1 + 1 * 2^0 = decimal 5.

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Relevant threads:

calculating the average of two hex colors?

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Relevant links:

Color Blender - a very useful tool.

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Relevant FAQs:

Can you direct me to good resources on colour?

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Emperor

(Added by: Emperor on Sun 12-Oct-2003)

(Edited by: DL-44 on Sun 12-Oct-2003)