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bg-blue-950

Tailwind Blue 950

#172554·Blue family·Shade 950

Color Values

HEX
#172554
RGB
rgb(23, 37, 84)
HSL
hsl(226, 57%, 21%)
OKLCH
oklch(0.282 0.087 268)
CMYK
cmyk(73%, 56%, 0%, 67%)
CSS Variable
var(--color-blue-950)
Tailwind Class
bg-blue-950

Accessibility Score

60/100

Good

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

On White

14.69:1

AAA

On Black

1.43:1

Fail
Test in Contrast Checker →

Tailwind Usage — All Utilities

Background

bg-blue-950

Text

text-blue-950

Border

border-blue-950

Ring

ring-blue-950

Outline

outline-blue-950

Fill

fill-blue-950

Stroke

stroke-blue-950

From (gradient)

from-blue-950

Via (gradient)

via-blue-950

To (gradient)

to-blue-950

Placeholder

placeholder-blue-950

Caret

caret-blue-950

Accent

accent-blue-950

Decoration

decoration-blue-950

Shadow Color

shadow-blue-950

Tailwind v3 Config (extend custom color)

// tailwind.config.js module.exports = { theme: { extend: { colors: { 'blue-950': '#172554', }, }, }, };

CSS Equivalent

/* Hex */
background-color: #172554;

/* RGB */
background-color: rgb(23, 37, 84);

/* HSL */
background-color: hsl(226, 57%, 21%);

/* OKLCH (CSS Color Level 4) */
background-color: oklch(0.282 0.087 268);

/* CSS Custom Property (Tailwind v4) */
background-color: var(--color-blue-950);

/* Gradient example */
background: linear-gradient(135deg, #eff6ff 0%, #172554 100%);

OKLCH — Modern Color Space

Lightness (L)

0.282

28% perceived brightness

Chroma (C)

0.087

Color intensity / saturation

Hue (H)

268°

Angle on perceptual hue wheel

oklch(0.282 0.087 268)

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

Ultra-dark near-black variant

Shade 950 of the Blue palette

Recommended Uses

  • ✓Maximum-contrast text on white
  • ✓Rich dark card backgrounds
  • ✓Dark theme page backgrounds
  • ✓Tinted near-black UI surfaces

Avoid

✗On dark or dark-gray backgrounds — near-zero contrast.

Preview

On White

Aa Bb Cc

On Black

Aa Bb Cc

As Background

Aa Bb Cc — #172554

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 950

#1E1B4B

Tailwind Slate 800

#1E293B

Tailwind Gray 800

#1F2937

Tailwind Sky 950

#082F49

Tailwind Cyan 950

#083344

Tailwind Zinc 800

#27272A

Nearest Named Color

Tailwind Blue 950

Nearest Tailwind equivalent — #172554

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 950?
Tailwind Blue 950 has the hex code #172554. Its RGB value is rgb(23, 37, 84) and its HSL value is hsl(226, 57%, 21%).
What Tailwind utility classes use Blue 950?
Use bg-blue-950 for backgrounds, text-blue-950 for text color, border-blue-950 for borders, and ring-blue-950 for focus rings. In Tailwind v4 the CSS variable var(--color-blue-950) is available natively.
Is Tailwind Blue 950 WCAG accessible?
Tailwind Blue 950 achieves a 14.69:1 contrast ratio on white (AAA) and 1.43:1 on black (Fail). Its overall accessibility score is 60/100 (Good).
What is the OKLCH value for Tailwind Blue 950?
Tailwind Blue 950 in OKLCH is oklch(0.282 0.087 268) — lightness 0.282, chroma 0.087, hue 268°. OKLCH is a perceptually uniform space supported natively in modern CSS via the `color()` function.
What is Tailwind Blue 950 used for?
At shade 950, Tailwind Blue 950 is best described as "Ultra-dark near-black variant". Recommended uses: Maximum-contrast text on white, Rich dark card backgrounds, Dark theme page backgrounds.
← All Tailwind Colors