About amber-400
#FABC00 is amber-400, a tailwind v4. This page shows its rgb(250, 188, 0) / hsl(45.12, 100%, 49.02%) / oklch(0.8293 0.1701 84.49) values, WCAG contrast against black and white, an OKLCH tint-and-shade ramp, and complementary, analogous, and triadic harmonies — all computed in perceptually-uniform OKLCH.