About indigo-800
#372AAC is indigo-800, a tailwind v4. This page shows its rgb(55, 42, 172) / hsl(246, 60.75%, 41.96%) / oklch(0.3988 0.1949 277.32) 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.