About cyan-950
#053345 is cyan-950, a tailwind v4. This page shows its rgb(5, 51, 69) / hsl(196.87, 86.49%, 14.51%) / oklch(0.3015 0.0565 230.16) 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.