Whimsical Designs for Rug Hooking
Lemongrass was developed for the background of David Galchutts
"Chirp". These patterns are available on Etsy and wonderful, challenging patterns. This is in the yellow section but it has a hint of green and is quite similar to a pale lemongrass color. It's a nice light background and fairly neutral. It'll add a bit of warmth to your rug. I think it would make a beautiful light flower especially using the 8 Value Swatch. It would be warm but softer than yellow. Or use if for accents.
Ives Color: I can't identify this as yellow as it has a hint of green to it but not as much green as Chartreuse. which is why it is here in the yellows. It's closer to yellow and a light value.