indigo-900 — Tailwind v4.
WCAG 2.2 AA requires 4.5:1 for normal text and 3:1 for large text. Check any pair →
An 11-stop OKLCH ramp through indigo-900 (the same engine as the theme builder). Click any stop to open its page.
Protanopia
Deuteranopia
Tritanopia
Achromatopsia
How indigo-900 appears to viewers with each color-vision deficiency. Full simulator →
#312C85 is indigo-900, a tailwind v4. This page shows its rgb(49, 44, 133) / hsl(243.37, 50.28%, 34.71%) / oklch(0.3588 0.1436 278.81) 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.