About gray-800
#1E2939 is gray-800, a tailwind v4. This page shows its rgb(30, 41, 57) / hsl(215.56, 31.03%, 17.06%) / oklch(0.2784 0.0335 257.67) 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.