Color Circle Picker is a Chrome add-on developed by しろねぎ. It is a color picker tool that allows users to determine the position of a selected color on a color circle. The tool can be used on any element of a web page, making it a versatile choice for designers and developers.

One of the key features of Color Circle Picker is its support for both HSL and HSV color formats. This allows users to work with different color models based on their preferences. Additionally, the tool supports multiple color display formats, including HexRGB, RGB, HSL, and HSV.

To use Color Circle Picker, simply open the tab where you want the tool to operate and click on the extension icon. As you move your mouse on the web page, the tool will display the corresponding coordinates of the color picker on a pop-up in the top left corner of the page.

By left-clicking anywhere on the screen, you can fix the pixel information and modify the color circle or the color display format from the pop-up. To exit the extension, you can either click the "x" button on the magnifier or press the Esc key. The extension can also be closed by left-clicking outside the pop-up and magnifier.

Color Circle Picker is a free tool that provides a convenient and efficient way to pick colors from web pages. Its flexibility and ease of use make it a valuable resource for web designers and developers.