I also have an L322 with Navy carpetand would like the same when I get a L405. I have been through the brochures on this site http://www.auto-brochures.com/land_rover.html
I found Navy/Cirrus only available on ATB from MY14 thru 17. Navy/Ivory is available on HSE & Supercharged MY18 and later after the refresh.
Cirrus seems to be a light grey and Ivory is offwhite / cream - they are different