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bg-cyan-800

Tailwind Cyan 800

#155E75·Cyan family·Shade 800

Color Values

HEX
#155E75
RGB
rgb(21, 94, 117)
HSL
hsl(194, 70%, 27%)
OKLCH
oklch(0.450 0.077 224)
CMYK
cmyk(82%, 20%, 0%, 54%)
CSS Variable
var(--color-cyan-800)
Tailwind Class
bg-cyan-800

Accessibility Score

60/100

Good

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

On White

7.27:1

AAA

On Black

2.89:1

Fail
Test in Contrast Checker →

Tailwind Usage — All Utilities

Background

bg-cyan-800

Text

text-cyan-800

Border

border-cyan-800

Ring

ring-cyan-800

Outline

outline-cyan-800

Fill

fill-cyan-800

Stroke

stroke-cyan-800

From (gradient)

from-cyan-800

Via (gradient)

via-cyan-800

To (gradient)

to-cyan-800

Placeholder

placeholder-cyan-800

Caret

caret-cyan-800

Accent

accent-cyan-800

Decoration

decoration-cyan-800

Shadow Color

shadow-cyan-800

Tailwind v3 Config (extend custom color)

// tailwind.config.js module.exports = { theme: { extend: { colors: { 'cyan-800': '#155e75', }, }, }, };

CSS Equivalent

/* Hex */
background-color: #155E75;

/* RGB */
background-color: rgb(21, 94, 117);

/* HSL */
background-color: hsl(194, 70%, 27%);

/* OKLCH (CSS Color Level 4) */
background-color: oklch(0.450 0.077 224);

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

/* Gradient example */
background: linear-gradient(135deg, #ecfeff 0%, #164e63 100%);

OKLCH — Modern Color Space

Lightness (L)

0.450

45% perceived brightness

Chroma (C)

0.077

Color intensity / saturation

Hue (H)

224°

Angle on perceptual hue wheel

oklch(0.450 0.077 224)

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 Cyan 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 — #155E75

Cyan Shades

50

100

200

300

400

500

600

700

800

900

950

Similar Tailwind Colors

Perceptually close shades from other Tailwind color families.

Tailwind Teal 800

#115E59

Tailwind Sky 800

#075985

Tailwind Sky 900

#0C4A6E

Tailwind Emerald 800

#065F46

Tailwind Teal 700

#0F766E

Tailwind Teal 900

#134E4A

Nearest Named Color

Tailwind Cyan 800

Nearest Tailwind equivalent — #155E75

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 Cyan 800?
Tailwind Cyan 800 has the hex code #155E75. Its RGB value is rgb(21, 94, 117) and its HSL value is hsl(194, 70%, 27%).
What Tailwind utility classes use Cyan 800?
Use bg-cyan-800 for backgrounds, text-cyan-800 for text color, border-cyan-800 for borders, and ring-cyan-800 for focus rings. In Tailwind v4 the CSS variable var(--color-cyan-800) is available natively.
Is Tailwind Cyan 800 WCAG accessible?
Tailwind Cyan 800 achieves a 7.27:1 contrast ratio on white (AAA) and 2.89:1 on black (Fail). Its overall accessibility score is 60/100 (Good).
What is the OKLCH value for Tailwind Cyan 800?
Tailwind Cyan 800 in OKLCH is oklch(0.450 0.077 224) — lightness 0.450, chroma 0.077, hue 224°. OKLCH is a perceptually uniform space supported natively in modern CSS via the `color()` function.
What is Tailwind Cyan 800 used for?
At shade 800, Tailwind Cyan 800 is best described as "Deep tone for text & UI". Recommended uses: Heading text on white, Icon fills on light backgrounds, Dark sidebar fills.
← All Tailwind Colors