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bg-indigo-500

Tailwind Indigo 500

#6366F1·Indigo family·Shade 500

Color Values

HEX
#6366F1
RGB
rgb(99, 102, 241)
HSL
hsl(239, 84%, 67%)
OKLCH
oklch(0.585 0.204 277)
CMYK
cmyk(59%, 58%, 0%, 5%)
CSS Variable
var(--color-indigo-500)
Tailwind Class
bg-indigo-500

Accessibility Score

60/100

Good

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

On White

4.47:1

AA Large

On Black

4.7:1

AA
Test in Contrast Checker →

Tailwind Usage — All Utilities

Background

bg-indigo-500

Text

text-indigo-500

Border

border-indigo-500

Ring

ring-indigo-500

Outline

outline-indigo-500

Fill

fill-indigo-500

Stroke

stroke-indigo-500

From (gradient)

from-indigo-500

Via (gradient)

via-indigo-500

To (gradient)

to-indigo-500

Placeholder

placeholder-indigo-500

Caret

caret-indigo-500

Accent

accent-indigo-500

Decoration

decoration-indigo-500

Shadow Color

shadow-indigo-500

Tailwind v3 Config (extend custom color)

// tailwind.config.js module.exports = { theme: { extend: { colors: { 'indigo-500': '#6366f1', }, }, }, };

CSS Equivalent

/* Hex */
background-color: #6366F1;

/* RGB */
background-color: rgb(99, 102, 241);

/* HSL */
background-color: hsl(239, 84%, 67%);

/* OKLCH (CSS Color Level 4) */
background-color: oklch(0.585 0.204 277);

/* CSS Custom Property (Tailwind v4) */
background-color: var(--color-indigo-500);

/* Gradient example */
background: linear-gradient(135deg, #eef2ff 0%, #4f46e5 100%);

OKLCH — Modern Color Space

Lightness (L)

0.585

59% perceived brightness

Chroma (C)

0.204

Color intensity / saturation

Hue (H)

277°

Angle on perceptual hue wheel

oklch(0.585 0.204 277)

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

Primary brand color

Shade 500 of the Indigo palette

Recommended Uses

  • ✓CTA buttons
  • ✓Active navigation links
  • ✓Primary brand accents
  • ✓Interactive element fills
  • ✓Highlighted badges

Avoid

✗Text on dark/black backgrounds — check contrast before use.

Preview

On White

Aa Bb Cc

On Black

Aa Bb Cc

As Background

Aa Bb Cc — #6366F1

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 Violet 500

#8B5CF6

Tailwind Blue 500

#3B82F6

Tailwind Blue 600

#2563EB

Tailwind Slate 500

#64748B

Tailwind Violet 600

#7C3AED

Tailwind Gray 500

#6B7280

Nearest Named Color

Tailwind Indigo 500

Nearest Tailwind equivalent — #6366F1

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 500?
Tailwind Indigo 500 has the hex code #6366F1. Its RGB value is rgb(99, 102, 241) and its HSL value is hsl(239, 84%, 67%).
What Tailwind utility classes use Indigo 500?
Use bg-indigo-500 for backgrounds, text-indigo-500 for text color, border-indigo-500 for borders, and ring-indigo-500 for focus rings. In Tailwind v4 the CSS variable var(--color-indigo-500) is available natively.
Is Tailwind Indigo 500 WCAG accessible?
Tailwind Indigo 500 achieves a 4.47:1 contrast ratio on white (AA Large) and 4.7:1 on black (AA). Its overall accessibility score is 60/100 (Good).
What is the OKLCH value for Tailwind Indigo 500?
Tailwind Indigo 500 in OKLCH is oklch(0.585 0.204 277) — lightness 0.585, chroma 0.204, hue 277°. OKLCH is a perceptually uniform space supported natively in modern CSS via the `color()` function.
What is Tailwind Indigo 500 used for?
At shade 500, Tailwind Indigo 500 is best described as "Primary brand color". Recommended uses: CTA buttons, Active navigation links, Primary brand accents.
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