PURPLE

Indigo

#4B0082

Conversions

HEX#4B0082

RGBrgb(75, 0, 130)

HSLhsl(275, 100%, 25%)

HSVhsv(275, 100%, 51%)

CMYKcmyk(42%, 100%, 0%, 49%)

Copy CSS

color: #4b0082;
/* rgb  */ color: rgb(75, 0, 130);
/* hsl  */ color: hsl(275, 100%, 25%);

Contrast

On whitePass · 12.95 : 1

On ink blackFail · 1.48 : 1

Shades

Tints

Pairings

About Indigo

Indigo is the hex color #4B0082, which translates to rgb(75, 0, 130) in RGB and hsl(275, 100%, 25%) in HSL. On the color wheel it sits at 275 degrees, with a saturation of 100 percent and a lightness of 25 percent. That combination gives Indigo a saturated mid tone: strong enough for buttons and links, still calm enough for larger areas.

How Indigo compares

Indigo is exactly the CSS keyword indigo, so you can write the keyword instead of the hex and get an identical result. In the Tailwind CSS 4.3.1 palette the nearest token is purple-900 (#59168B), at a distance of 5.9. Inside this library the closest neighbour is Web Purple at 6.8. Sorted by lightness, Indigo is number 2 of the 31 purple colors here.

Text on Indigo

2 of the five common text colors below clear WCAG AA for normal text on Indigo, led by White at 12.95:1. The ratios are computed with the WCAG relative luminance formula, the same one the contrast checker uses, which opens with Indigo already loaded as the background.

Contrast of common text colors on Indigo. AA normal text needs 4.5:1, AA large text and non-text elements need 3:1, AAA normal text needs 7:1.
Text color	Ratio	AA normal	AA large	AAA normal
White #FFFFFF	12.95:1	Pass	Pass	Pass
Ink black #0F0F12	1.48:1	Fail	Fail	Fail
Mid grey #6B7280	2.68:1	Fail	Fail	Fail
Dark grey #374151	1.26:1	Fail	Fail	Fail
Light grey #E5E7EB	10.46:1	Pass	Pass	Pass

Building a palette around Indigo

The pairings above give you three classic starting points. The complementary color sits opposite on the wheel and works well as an accent that draws the eye. The analogous colors sit right beside Indigo for calmer, harmonious combinations. The triadic pair spaces three hues evenly for a balanced, energetic palette. Open any swatch to explore it as its own color.

Full values for Indigo

Format	Value
HEX	#4B0082
RGB	rgb(75, 0, 130)
HSL	hsl(275, 100%, 25%)
HSV	hsv(275, 100%, 51%)
CMYK	cmyk(42%, 100%, 0%, 49%)
OKLCH	oklch(33.90% 0.1793 301.68)
CIELAB	lab(20.47 51.69 -53.31)

Use Indigo in a tool

Nearby colors

Last updated 5 August 2026 by FusionStudios. Every value on this page is computed by the same functions the tools use. How this is calculated.