About gray-500
#6A7282 is gray-500, a tailwind v4. This page shows its rgb(106, 114, 130) / hsl(220, 10.17%, 46.27%) / oklch(0.551 0.0267 264.33) 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.