Green Paint Colours

[GoldieLocks09]

I've got a vision for my DS's bedroom/nursery, a darker green (but not specifically a 'dark green') on the bottom half of the walls with a scalloped detail as the border, this darker colour will also go on the woodwork/windowsill etc, then a lighter green above it which will be drenched on to the ceiling as well. I then have some lovely artwork that has lots of yellows, greens, oranges in which will go into wooden frames.

I've tried quite a few out and my hallway looks ridiculous with the amount of samples I've painted on... there's some I really like, but none that I feel 'go together', it's like the 2 colours don't seem to go in harmony and don't actually match each other enough to be on the wall together.

Some of the colours I've tried:
F&B - Lichen - like this a lot, Olive - felt like it was a bit too dark for a nursery but would be brave with it if I found a perfect partner, Vert de Terre - loved, Bone - too grey, Stone White - liked it initially but now looks a bit yellow, Terron - same bracket as the Olive,a bit dark but nothing worked with it?
Little Greene Paints - Sage Green - thought I'd love, looks quite dark on the wall though. Boringdon Green - loved it when I painted it then dried a little blue...

Please can anyone share some green combos that work well together?

Try paint and paper library - they do lighter and darker shades of the same colour. I used Willow iv in our drawing room and was really happy with it :-)

@BishopOakAntiques Amazing! Thank you for this, I've just had a look and love the look of the 'Sprig' collection (thinking III and V, but going to get II & IV as well just in case!), going to see if I can pick up the samples tomorrow from a local stockists.

Paint and paper library are the same co as little green I think, really great paints, especially for kids rooms.
I recently used Johnstone's trade paints in one of my rooms, Green silk, I'm in love with it. Would go well with April breeze or cooling wax.

Not sure if this is too dark but I went for Mansard from COAT paints for the main bedroom and I love it. We did each room all one colour though so not sure what goes. I know COAT do sample sticker packs so could try getting one darker greens and one mid greens to try and mix and match? They've also got a light greens and an earthy greens so really you've got quite a few choices here to experiment with...!