About yellow-900
#733E0A is yellow-900, a tailwind v4. This page shows its rgb(115, 62, 10) / hsl(29.71, 84%, 24.51%) / oklch(0.4215 0.0952 57.94) 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.