Put #F9D71C beside navy and it snaps into focus. On white, it needs a dark outline or a generous block of space because the light value can disappear. It works best as a badge, small spark, or one strong panel rather than a whole page background.

Tints
#f9d71c
#fadb33
#fadf49
#fbe360
#fbe777
#fceb8e
#fdefa4
#fdf3bb
#fef7d2
#fefbe8
#ffffff
Shadows
#f9d71c
#e0c219
#c7ac16
#ae9614
#958111
#7c6c0e
#64560b
#4b4008
#322b06
#191603