Two Kilts, One Good pair of hose

[OC Richard]

Back to the OP, those photos are dark and small even when I click on them, so I can't see either tartan well enough to have an opinion.

If one is primarily a blue/green tartan and one is primarily a red tartan, the traditional Day hose colours such as Lovat blue, Lovat green, ancient blue, or ancient green would be fine.

There's a very nice colour which I've seen called St Andrews blue which IMHO goes nicely with practically any tartan.

Then there's grey and brown. Grey, not being a colour per se can neither clash nor co-ordinate with any tartan. Brown has a similar neutrality.

Cheviot makes a wonderful taupe colour they call Bison that looks fantastic with many tartans especially if you're wearing tweed above the waist.