About stone-950
#0C0A09 is stone-950, a tailwind v4. This page shows its rgb(12, 10, 9) / hsl(20, 14.29%, 4.12%) / oklch(0.1469 0.0041 49.25) 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.