Color Schemer  
   Software to generates matching color schemes at the click of a button, online version available.
   http://www.colorschemer.com/

Arisesoft Color Set  
   Program will help to choose the perfect colors for a website. The ready color scheme can be saved in an HTML-code, or in favorites. Previewing of the color in the full screen mode and HEX, RGB, and HSB color conversion is included as well.
   http://webtools.arisesoft.com/colorset/

Hexed!  
   A freeware Windows program that converts RGB values to hex and vice versa. Also available in a web-based version.
   http://www.phenry.org/software/hexed/

ColorPerfect  
   Navigate an RGB Color Wheel using any one of six pre-defined filters. Save color palettes as one of three common file formats: Color Swatch (.ACO), Color Table (.ACT) and Color Palette (.PAL).
   http://www.synergymedia.net/products/ColorPerfect/

Nattyware - Pixie  
   Utility designed especially to fit the needs of Webmasters and Designers. A color picker includes a mouse tracker. Run it, simply point to a color and it will tell the hex, RGB, HTML, CMYK and HSV values of that color.
   http://www.nattyware.com/pixie.html

Iconico - Color Picker  
   Color picker for high-resolution monitors, has a magnifier attached. The magnifier is controlled from the keyboard, and grab up to eight colors at once. [Windows NT/98/95/2000]
   http://www.iconico.com/colorpic/

Color Cop  
   A free multi-featured color picking tool. Has a eyedropper, magnifier, 3x3/5x5 average sampling, complementary color generation and variable magnification levels.
   http://datastic.com/tools/colorcop/features.php

GAX Professional v2.2  
   Pick colors from every part of the screen; GAX automatically detects the palette of various windows on the screen, therefor sampling the color with 100% accuracy. Included are a screen ruler and a screen-capturing tool with a variety of ways to capture pa
   http://www.dolphiq-sd.com/

WhatColor - A PC Tool For Colorblind People  
   Software designed for those people with partial or total color blindness. It identifies a color of the pixel on the screen of the PC. It tells not only RGB values, but also the name of the color of the point.
   http://www.hikarun.com/e/

Abitom's Color Wheel Expert  
   A Windows color picker utility to help designers create harmonious color scheme with the color wheel. [Windows 95/98/Me/NT/2000]
   http://www.abitom.com/

ColorWrite - Color tool for CSS, HTML, Java  
   Java application that helps one to choose and define colors (Websafe, RGB, HSV, CMY[K]) and then generates a variety of CSS, HTML and Java code "fragments" (BGCOLOR="#339966") that you can select and paste into a editor.
   http://www.adaptiveview.com/cw/overview.html

AlexeySoft Color Picker  
   Color picking tool, which can pick color from anywhere on the screen. After picking, it shows the color code in different format, e.g. RGB, HSL, HSV, HTML, Delphi, C++ and VB. Copy the code to clipboard and use it in other programs.
   http://www.alexeysoft.com/

Color Wheel Pro  
   Color scheme creation program that uses an interactive color wheel and allows to preview color schemes on real-world examples. [Windows 98/Me/NT/2000/XP]
   http://www.color-wheel-pro.com/

Technical Vision  
   Pick colors from anywhere on screen with a single mouse click or a key press. Shows the color in a variety of ways including RGB and HSL pairs, Delphi, C++ or HTML constants. Copy any code to clipboard. Minimize to SysTray when unused.
   http://www.techvision.ro/

Cool Color Picker  
   Tool to pick color from anywhere on the screen and change the color code into the format needed. Support the color code in RGB, HSL, HTML, Delphi, C++, and VB format.
   http://www.color-picker.net/

Get Color Sf  
   Free color picker with a magnifier control that will magnify any part of the screen (levels of 1x-20x).
   http://getcolorsf.sourceforge.net/

Super Color Picker  
   Automatically copy color code to clipboard, and show color codes in RGB, HSL, HTML, Delphi, C++ and VB formats.
   http://www.esier.com

EYE3  
   Color picker and blender with magnifier tools for web master. Suported color models: RGB(CMY, HEX, etc.), HSL, HSB(HSV). Copy the code to clipboard and use it in other programs.
   http://eye3.yarrr.ru

ColorShade  
   Creates matching harmonious color schemes. Includes web, scrollbar, and vector image preview, and palette creator.
   http://www.colorshade.com

Color Picker Pro  
   Pick one or several colors anywhere on the screen with a single mouse click. It features 2 capture modes, interactive zoom tool, 20+ color formats, and 10+ color spaces.
   http://www.diplodock.com/Products/ColorPicker/default.asp