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bg-blue-700

Tailwind Blue 700

#1D4ED8·Blue family·Shade 700

Color Values

HEX
#1D4ED8
RGB
rgb(29, 78, 216)
HSL
hsl(224, 76%, 48%)
OKLCH
oklch(0.488 0.217 264)
CMYK
cmyk(87%, 64%, 0%, 15%)
CSS Variable
var(--color-blue-700)
Tailwind Class
bg-blue-700

Accessibility Score

60/100

Good

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

On White

6.7:1

AA

On Black

3.13:1

AA Large
Test in Contrast Checker →

Tailwind Usage — All Utilities

Background

bg-blue-700

Text

text-blue-700

Border

border-blue-700

Ring

ring-blue-700

Outline

outline-blue-700

Fill

fill-blue-700

Stroke

stroke-blue-700

From (gradient)

from-blue-700

Via (gradient)

via-blue-700

To (gradient)

to-blue-700

Placeholder

placeholder-blue-700

Caret

caret-blue-700

Accent

accent-blue-700

Decoration

decoration-blue-700

Shadow Color

shadow-blue-700

Tailwind v3 Config (extend custom color)

// tailwind.config.js module.exports = { theme: { extend: { colors: { 'blue-700': '#1d4ed8', }, }, }, };

CSS Equivalent

/* Hex */
background-color: #1D4ED8;

/* RGB */
background-color: rgb(29, 78, 216);

/* HSL */
background-color: hsl(224, 76%, 48%);

/* OKLCH (CSS Color Level 4) */
background-color: oklch(0.488 0.217 264);

/* CSS Custom Property (Tailwind v4) */
background-color: var(--color-blue-700);

/* Gradient example */
background: linear-gradient(135deg, #eff6ff 0%, #1e40af 100%);

OKLCH — Modern Color Space

Lightness (L)

0.488

49% perceived brightness

Chroma (C)

0.217

Color intensity / saturation

Hue (H)

264°

Angle on perceptual hue wheel

oklch(0.488 0.217 264)

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

Dark accent & pressed state

Shade 700 of the Blue palette

Recommended Uses

  • ✓Pressed/active button states
  • ✓Text links on white
  • ✓Dark-mode primary buttons
  • ✓Table headers
  • ✓Strong UI accents

Avoid

✗Text on black — contrast is too low for dark mode text.

Preview

On White

Aa Bb Cc

On Black

Aa Bb Cc

As Background

Aa Bb Cc — #1D4ED8

Blue Shades

50

100

200

300

400

500

600

700

800

900

950

Similar Tailwind Colors

Perceptually close shades from other Tailwind color families.

Tailwind Indigo 700

#4338CA

Tailwind Indigo 600

#4F46E5

Tailwind Sky 700

#0369A1

Tailwind Sky 800

#075985

Tailwind Indigo 800

#3730A3

Tailwind Cyan 800

#155E75

Nearest Named Color

Tailwind Blue 700

Nearest Tailwind equivalent — #1D4ED8

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 Blue 700?
Tailwind Blue 700 has the hex code #1D4ED8. Its RGB value is rgb(29, 78, 216) and its HSL value is hsl(224, 76%, 48%).
What Tailwind utility classes use Blue 700?
Use bg-blue-700 for backgrounds, text-blue-700 for text color, border-blue-700 for borders, and ring-blue-700 for focus rings. In Tailwind v4 the CSS variable var(--color-blue-700) is available natively.
Is Tailwind Blue 700 WCAG accessible?
Tailwind Blue 700 achieves a 6.7:1 contrast ratio on white (AA) and 3.13:1 on black (AA Large). Its overall accessibility score is 60/100 (Good).
What is the OKLCH value for Tailwind Blue 700?
Tailwind Blue 700 in OKLCH is oklch(0.488 0.217 264) — lightness 0.488, chroma 0.217, hue 264°. OKLCH is a perceptually uniform space supported natively in modern CSS via the `color()` function.
What is Tailwind Blue 700 used for?
At shade 700, Tailwind Blue 700 is best described as "Dark accent & pressed state". Recommended uses: Pressed/active button states, Text links on white, Dark-mode primary buttons.
← All Tailwind Colors