color picker

PHP Color Picker

December 30, 2011

Pick a shade of red, green, or blue and you will see what the entire spectrum looks like against that color.  Hover your mouse over the resulting gradiant to see the hex value of the color directly under your cursor.  Results can be bookmarked.  This was written in August, 2005.

PHP Color Picker

 

Java Color Picker

December 30, 2011

There are 3 dimensions to the full color spectrum: red, green, blue. The most accurate way to portray this spectrum is a 3D cube. This page is 2D, and as such only 2 of the colors may be fully examined at a time, think of it as a cross-section of the cube. Each primary color has 256 possible values (0-255), and with three colors that gives a possibility of 16.8 million colors (256^3). When you choose a color above, the 2 colors that you did not pick are placed on the x and y axis. It is easiest to imagine that the slider now becomes the z-axis of the chosen color, use it to determine which cross-section of the 3d color spectrum cube you want to look at.  Click on the color you are interested in and the hex value is displayed.

I was not familiar with PhotoShop at the time I wrote this (January, 2006), however, it works exactly like their RGB color.

Java Color Picker

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