CSS Color Module Level 4 - World Wide Web Consortium

4 digits This is a shorter variant of the 8-digit notation, "expanded" in the same way as the 3-digit notation is. The first digit, interpreted as a hexadecimal number, specifies the red channel of the color, where 0 represents the minimum value and f represents the maximum.

Has Apple's Color Been Merged Into Final Cut Pro X?

Initial reactions to color correction tools of Final Cut Pro X v.1. How is it different from previous versions of Final Cut? Does it replace Apple's Color?