About gray-600
#4A5565 is gray-600, a tailwind v4. This page shows its rgb(74, 85, 101) / hsl(215.56, 15.43%, 34.31%) / oklch(0.4461 0.0298 257.68) 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.