About blue-400
#56A2FF is blue-400, a tailwind v4. This page shows its rgb(86, 162, 255) / hsl(213.02, 99.97%, 66.86%) / oklch(0.7059 0.1564 254.73) 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.