#FDF80A Hex Color

Black text reads best on #fdf80a, with a contrast ratio of about 18.6:1, well above the 4.5:1 needed for WCAG AA body text. White text fails badly here, so keep this shade for dark-on-light layouts.

Deep navy and charcoal both ground this yellow's intensity, making it feel deliberate instead of loud. Limit it to small accents against either base for sale graphics or signage.