These two tones of yellowish hues are bright reminders of springtime and also bring to mind the beautiful yellow hues of fresh egg yolks in the most commonly served item on an egg plate, deviled eggs.
Fiestaware Yellow Tones
The colors above are, from back to front:
Sunflower
Ivory
In this photo the Ivory appears fairly white in color, but in person it does have distinctly yellowish cast in the right lighting.