ColorCalc – command-line calculator for colors

If you’re one of the few crazies like me who prefer doing web development using command-line tools, you might appreciate this simple command-line calculator which can operate on RGB colors. It supports the 4 basic arithmetic operations and grouping using parens. Examples:

C:\> colorcalc FFFFFF / 2
808080 (0.5)

You can use scalar values, as well.

C:\> colorcalc 808080
808080 (0.501961)

Since 0 is #000000 and 1 is #FFFFFF, 0.5 is between #7F7F7F and #808080.

C:\> colorcalc 808080 * 808080
404040 (0.251965)

Vector-ish multiplication – approximative equivalent of 0.5 * 0.5.

C:\> colorcalc 1-FFCC00
0033FF

Get the negative of a color.

C:\> colorcalc (FFCC00 + CCDDFF) / 2
E6D580

Calculate the mean value of two colors.

etc.

Source, download.

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