Soft Autumn's yellows only really look yellow in the context of Soft Autumn coloring.. Next to brighter colors, they can read as tan. On a Light Spring, they can look heavy and draining. Or they can just look like tan. But they won't look yellow.
Easter Egg Yellow vs. Wheat Yellow
A read finds herself narrowed down to these two seasons.
I'm often asked how to tell these two apart, actually. It's quite common for people to get this far and then get stuck.
If you know you're neutral-warm rather than purely warm,
and you also know you absolutely can't wear black,
these are your only two options.
So how to make the final decision?
Try testing these pairs of colors on yourself.
Lime Green vs. Dark Forest Green
Soft Autumn, meanwhile, is lovely in dark forest green. This color does nothing at all for Light Spring - it's darker than they are.
Aqua Blue vs. Cadet Blue
Google "cadet blue" to see images that suggest Soft Autumn's tricky blues. These can make a Light Spring look sickly grey, and in my opinion are among Light Spring's worst colors.
Hot Pink vs. Brick Red
Soft Autumns get faded brick reds that read as straight-up red in the context of muted Soft Autumn coloring. On a Light Spring, these reds are meh.
You might want to also check out Christine Scaman's article about differences between Spring and Autumn colors.