help me choose colour for new bedroom carpet

[hyperhops]

having trouble deciding on colour for new bedroom carpet.
walls are cornflower white, curtains navy, furniture white, bedding white/pale blue and navy.
wanting a light colour but not sure what. Most neutrals are fairly creamy and i'm not sure how that would work with the white, tried a pale grey sample but it looked wrong against the walls. don't want blue as looks naf! considered white - but seriously who on their right mind has a white carpet?!(plus hard to find white rather than cream)
any ideas???

[Lagoonablue]

I have a creamy Berber. Looks 'natural' so fits in with most colours. I have it on a grey bedroom and looks fine.