#E6FD44 Hex Color

Charcoal and black ground its intensity, while a deep plum or navy adds contrast without competing. Pale neutrals tend to wash it out, so favor dark partners. charcoal is an easy starting point.

Black text on #e6fd44 reaches about 18.5:1 contrast, well past the WCAG AA requirement of 4.5:1. White text fails badly here, so keep all type dark when this yellow sits behind it.