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bg-indigo-800

Tailwind Indigo 800

#3730A3·Indigo family·Shade 800

Color Values

HEX
#3730A3
RGB
rgb(55, 48, 163)
HSL
hsl(244, 55%, 41%)
OKLCH
oklch(0.398 0.177 277)
CMYK
cmyk(66%, 71%, 0%, 36%)
CSS Variable
var(--color-indigo-800)
Tailwind Class
bg-indigo-800

Accessibility Score

60/100

Good

Based on WCAG 2.1 contrast ratios against white and black backgrounds.

On White

9.93:1

AAA

On Black

2.11:1

Fail
Test in Contrast Checker →

Tailwind Usage — All Utilities

Background

bg-indigo-800

Text

text-indigo-800

Border

border-indigo-800

Ring

ring-indigo-800

Outline

outline-indigo-800

Fill

fill-indigo-800

Stroke

stroke-indigo-800

From (gradient)

from-indigo-800

Via (gradient)

via-indigo-800

To (gradient)

to-indigo-800

Placeholder

placeholder-indigo-800

Caret

caret-indigo-800

Accent

accent-indigo-800

Decoration

decoration-indigo-800

Shadow Color

shadow-indigo-800

Tailwind v3 Config (extend custom color)

// tailwind.config.js module.exports = { theme: { extend: { colors: { 'indigo-800': '#3730a3', }, }, }, };

CSS Equivalent

/* Hex */
background-color: #3730A3;

/* RGB */
background-color: rgb(55, 48, 163);

/* HSL */
background-color: hsl(244, 55%, 41%);

/* OKLCH (CSS Color Level 4) */
background-color: oklch(0.398 0.177 277);

/* CSS Custom Property (Tailwind v4) */
background-color: var(--color-indigo-800);

/* Gradient example */
background: linear-gradient(135deg, #eef2ff 0%, #312e81 100%);

OKLCH — Modern Color Space

Lightness (L)

0.398

40% perceived brightness

Chroma (C)

0.177

Color intensity / saturation

Hue (H)

277°

Angle on perceptual hue wheel

oklch(0.398 0.177 277)

OKLCH is a perceptually uniform color space in CSS Color Level 4. Unlike HSL, equal steps in L produce equal perceived lightness changes — making it ideal for building accessible, harmonious design system scales.

Design Recommendations

Deep tone for text & UI

Shade 800 of the Indigo palette

Recommended Uses

  • ✓Heading text on white
  • ✓Icon fills on light backgrounds
  • ✓Dark sidebar fills
  • ✓Strong badge colors
  • ✓Section dividers

Avoid

✗On colored or dark backgrounds — check contrast ratio first.

Preview

On White

Aa Bb Cc

On Black

Aa Bb Cc

As Background

Aa Bb Cc — #3730A3

Indigo Shades

50

100

200

300

400

500

600

700

800

900

950

Similar Tailwind Colors

Perceptually close shades from other Tailwind color families.

Tailwind Blue 900

#1E3A8A

Tailwind Blue 800

#1E40AF

Tailwind Violet 900

#4C1D95

Tailwind Violet 800

#5B21B6

Tailwind Purple 900

#581C87

Tailwind Slate 700

#334155

Nearest Named Color

Tailwind Indigo 800

Nearest Tailwind equivalent — #3730A3

Design & Accessibility Guides

Guide

Building an Accessible Color System

Design Systems · 10 min read

Guide

WCAG Contrast Ratios Explained

WCAG · 8 min read

Guide

WCAG AA vs AAA: Which Standard Should You Target?

WCAG · 7 min read

Frequently Asked Questions

What is the hex code for Tailwind Indigo 800?
Tailwind Indigo 800 has the hex code #3730A3. Its RGB value is rgb(55, 48, 163) and its HSL value is hsl(244, 55%, 41%).
What Tailwind utility classes use Indigo 800?
Use bg-indigo-800 for backgrounds, text-indigo-800 for text color, border-indigo-800 for borders, and ring-indigo-800 for focus rings. In Tailwind v4 the CSS variable var(--color-indigo-800) is available natively.
Is Tailwind Indigo 800 WCAG accessible?
Tailwind Indigo 800 achieves a 9.93:1 contrast ratio on white (AAA) and 2.11:1 on black (Fail). Its overall accessibility score is 60/100 (Good).
What is the OKLCH value for Tailwind Indigo 800?
Tailwind Indigo 800 in OKLCH is oklch(0.398 0.177 277) — lightness 0.398, chroma 0.177, hue 277°. OKLCH is a perceptually uniform space supported natively in modern CSS via the `color()` function.
What is Tailwind Indigo 800 used for?
At shade 800, Tailwind Indigo 800 is best described as "Deep tone for text & UI". Recommended uses: Heading text on white, Icon fills on light backgrounds, Dark sidebar fills.
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