About red-400
#FF6568 is red-400, a tailwind v4. This page shows its rgb(255, 101, 104) / hsl(358.83, 100%, 69.8%) / oklch(0.7036 0.1881 22.15) 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.