HexColor

HexColor was created for Mac app developers and graphic designers who require assistance in identifying the codes for the colors they use while programming.

This app features a very intuitive interface, lets you choose between three color code types, and comes without a price tag.

You can select the preferred opacity level, change the color code type whenever you like with just one click, and choose between various color palettes. What's more, this program also provides you with a magnifying tool that enables you to pick any color within your screen and quickly identify its correspondent code.

Another important advantage is the fact that the application immediately identifies color codes. As soon as you click over a shade within the palette, the utility shows you the correspondent code on the bottom side of the screen.

You can copy the codes to your clipboard and drag-and-drop the shades to the bottom side of the screen (there you keep your favorite color codes in case you wish to use them later).

Cutting a long story short, HexColor proves to be a reliable solution when it comes to identifying codes for any color you like. Hence, I'd say it's definitely worth installing it on your Mac, especially since it's free of charge.