About emerald-600
#009669 is emerald-600, a tailwind v4. This page shows its rgb(0, 150, 105) / hsl(161.98, 99.79%, 29.44%) / oklch(0.5956 0.128 163.37) 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.