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RGBHex

indigo

#4B0082

indigoCSS named color.

Formats

Open #4B0082 in the converter →

Contrast & legibility

Text on white12.95:1 AA ✓
Text on black1.62:1 AA ✗

WCAG 2.2 AA requires 4.5:1 for normal text and 3:1 for large text. Check any pair →

Tints & shades

An 11-stop OKLCH ramp through indigo (the same engine as the theme builder). Click any stop to open its page.

Harmonies

Explore all harmonies for #4B0082

Color-blindness preview

#003185

Protanopia

#003180

Deuteranopia

#3e2e4a

Tritanopia

#313131

Achromatopsia

How indigo appears to viewers with each color-vision deficiency. Full simulator →

About indigo

#4B0082 is indigo, a css named color. This page shows its rgb(75, 0, 130) / hsl(274.62, 100%, 25.49%) / oklch(0.339 0.1793 301.68) 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.