About zinc-500
#71717B is zinc-500, a tailwind v4. This page shows its rgb(113, 113, 123) / hsl(240, 4.24%, 46.27%) / oklch(0.552 0.0153 285.89) 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.