About gray-200
#E5E7EB is gray-200, a tailwind v4. This page shows its rgb(229, 231, 235) / hsl(220, 13.04%, 90.98%) / oklch(0.9276 0.0058 264.53) 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.