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bg-sky-500

Tailwind Sky 500

#0EA5E9·Sky family·Shade 500

Color Values

HEX
#0EA5E9
RGB
rgb(14, 165, 233)
HSL
hsl(199, 89%, 48%)
OKLCH
oklch(0.685 0.148 237)
CMYK
cmyk(94%, 29%, 0%, 9%)
CSS Variable
var(--color-sky-500)
Tailwind Class
bg-sky-500

Accessibility Score

60/100

Good

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

On White

2.77:1

Fail

On Black

7.58:1

AAA
Test in Contrast Checker →

Tailwind Usage — All Utilities

Background

bg-sky-500

Text

text-sky-500

Border

border-sky-500

Ring

ring-sky-500

Outline

outline-sky-500

Fill

fill-sky-500

Stroke

stroke-sky-500

From (gradient)

from-sky-500

Via (gradient)

via-sky-500

To (gradient)

to-sky-500

Placeholder

placeholder-sky-500

Caret

caret-sky-500

Accent

accent-sky-500

Decoration

decoration-sky-500

Shadow Color

shadow-sky-500

Tailwind v3 Config (extend custom color)

// tailwind.config.js module.exports = { theme: { extend: { colors: { 'sky-500': '#0ea5e9', }, }, }, };

CSS Equivalent

/* Hex */
background-color: #0EA5E9;

/* RGB */
background-color: rgb(14, 165, 233);

/* HSL */
background-color: hsl(199, 89%, 48%);

/* OKLCH (CSS Color Level 4) */
background-color: oklch(0.685 0.148 237);

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

/* Gradient example */
background: linear-gradient(135deg, #f0f9ff 0%, #0284c7 100%);

OKLCH — Modern Color Space

Lightness (L)

0.685

69% perceived brightness

Chroma (C)

0.148

Color intensity / saturation

Hue (H)

237°

Angle on perceptual hue wheel

oklch(0.685 0.148 237)

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 Sky 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 — #0EA5E9

Sky Shades

50

100

200

300

400

500

600

700

800

900

950

Similar Tailwind Colors

Perceptually close shades from other Tailwind color families.

Tailwind Cyan 500

#06B6D4

Tailwind Cyan 600

#0891B2

Tailwind Teal 500

#14B8A6

Tailwind Teal 600

#0D9488

Tailwind Blue 500

#3B82F6

Tailwind Cyan 400

#22D3EE

Nearest Named Color

Tailwind Sky 500

Nearest Tailwind equivalent — #0EA5E9

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 Sky 500?
Tailwind Sky 500 has the hex code #0EA5E9. Its RGB value is rgb(14, 165, 233) and its HSL value is hsl(199, 89%, 48%).
What Tailwind utility classes use Sky 500?
Use bg-sky-500 for backgrounds, text-sky-500 for text color, border-sky-500 for borders, and ring-sky-500 for focus rings. In Tailwind v4 the CSS variable var(--color-sky-500) is available natively.
Is Tailwind Sky 500 WCAG accessible?
Tailwind Sky 500 achieves a 2.77:1 contrast ratio on white (Fail) and 7.58:1 on black (AAA). Its overall accessibility score is 60/100 (Good).
What is the OKLCH value for Tailwind Sky 500?
Tailwind Sky 500 in OKLCH is oklch(0.685 0.148 237) — lightness 0.685, chroma 0.148, hue 237°. OKLCH is a perceptually uniform space supported natively in modern CSS via the `color()` function.
What is Tailwind Sky 500 used for?
At shade 500, Tailwind Sky 500 is best described as "Primary brand color". Recommended uses: CTA buttons, Active navigation links, Primary brand accents.
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