slate-400 — 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 slate-400 (the same engine as the theme builder). Click any stop to open its page.
Protanopia
Deuteranopia
Tritanopia
Achromatopsia
How slate-400 appears to viewers with each color-vision deficiency. Full simulator →
#90A1B9 is slate-400, a tailwind v4. This page shows its rgb(144, 161, 185) / hsl(215.12, 22.65%, 64.51%) / oklch(0.7038 0.0402 256.99) 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.