Blue paint dilemma- hicks, hague, stiffkey or indigo

[Threelittlebirds1]

I am currently decorating the living room, quite a dark east facing room. 3 walls have been painted mid-dark grey and I'd like a blue feature wall. I now have about 20 samples on the wall and still can't decide! So please can I have opinions on the following final 4:
F&B Stiffkey blue
F&B Hague blue (it's probably a bit too dark for the room)
Little greene Hicks blue
Dulux Indigo shade

Please share your advice/opinions. Any photos also appreciated, it's so hard to tell from a small sample on the wall!

If you're undecided between those, I'd just go with LG, the paint is so much better than F&B. Not used Dulux for a long time, only Dulux Trade but I think the colours are different? I'd be wary though of 3 x dark grey walls and 1 x blue. We have a Benjamin Moore navy blue in the sitting room - on all 4 walls, but with lots of white to lift it (above picture rail / ceiling / built in cabinets).

I would always go for Little Greene. It’s a slightly different shade but we have their Deep Space Blue in intelligent matt in DD’s bedroom and it is completely bomb-proof and non-marking.

Thanks - I have been learning towards little greene so that's great to hear.
@Africa2go we have picture rails also, and it's all white above there which I think will lift it. I actually don't mind it being dark though as it's quite a cosy room and generally my adult space, the rest of the house is bright - I quite like the idea of retreating into a dark cosy room once the kids are in bed! But I understand what you're saying and have ruled out Hague for this reason!