Myutwo33

Color Modes	Integer	Floating Point	Fixed Point	Optional Alpha Channel
1-bit (Monochrome)	Yes	No	No	No
8-bit Grayscale	Yes	No	No	No
16-bit Grayscale	Yes	Yes	Yes	No
32-bit Grayscale	No	Yes	Yes	No
24-Bit RGB	Yes	No	No	Yes
48-Bit RGB	Yes	Yes	Yes	Yes
96-Bit RGB	No	Yes	Yes	Yes
16-Bit RGB555	Yes	No	No	No
16-Bit RGB565	Yes	No	No	No
32-Bit RGB101010	Yes	No	No	No
64-Bit RGB	No	Yes	Yes	No
128-Bit RGB	No	Yes	Yes	No
32-Bit CMYK	Yes	No	No	Yes
64-Bit CMYK	Yes	No	No	Yes
12-Bit YUV420	Yes	No	No	Yes
16-Bit YUV422	Yes	No	No	Yes
20-Bit YUV422	Yes	No	No	Yes
24-Bit YUV444	Yes	No	No	Yes
48-Bit YUV444	Yes	No	Yes	Yes
30-Bit YUV444	Yes	No	No	Yes
32-Bit RGBE	No	Yes	No	No
8-Bit N-Channels	Yes	No	No	Yes
16-Bit N-Channels	Yes	No	No	Yes

In addition to the pixel formats listed above JPEG XR also has some support for BGR channel ordering and Pre-multiplied alpha.