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Sky Blue vs Cerulean: What's the Difference?

The main difference between Sky Blue and Cerulean is brightness and saturation: both are cyan shades, but Sky Blue is lighter and Cerulean is more saturated. Sky Blue and Cerulean are often confused but have distinct differences in hue, saturation, and tone. Sky Blue (#87CEEB) and Cerulean (#007BA7) each suit different design contexts — understanding their differences helps you choose the right color for your project.

Sky Blue#87CEEB
Cerulean#007BA7
#87CEEBBlended: #44A5C9#007BA7
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Sky Blue vs Cerulean: Key Differences at a Glance

Aspect Sky Blue Cerulean
BrightnessLight (L=73%) — airy, soft, approachableDark (L=33%) — rich, serious, substantial
SaturationVivid (S=71%) — bright, energetic, eye-catchingVivid (S=100%) — bright, energetic, eye-catching
Hue familyCyanCyan
TemperatureCoolCool
Hex code#87CEEB#007BA7
RGB135, 206, 2350, 123, 167

Can you use Sky Blue and Cerulean together?

Cerulean text on Sky Blue
Sky Blue text on Cerulean
Contrast Ratio:2.75:1Insufficient Contrast

How to Tell Sky Blue and Cerulean Apart

  • ●Look at lightness first: Sky Blue is noticeably lighter.
  • ●Check saturation: Cerulean looks more vivid and saturated.
  • ●Compare them on a white background to see true saturation, and on black to see true lightness.

Sky Blue or Cerulean: Which to Use and Where

Four real design scenarios, with the recommended pick based on hue, saturation, and WCAG contrast.

◆Branding & logos
PickCerulean

Cerulean is more saturated (100% HSL vs 71%) so it reads as bolder and more memorable at logo scale, while Sky Blue can feel washed out when printed small.

▢Web UI & body text backgrounds
PickCerulean

Cerulean hits a 4.78:1 WCAG contrast against white — safer for text-heavy interfaces — where Sky Blue only reaches 1.74:1 and risks failing AA at small body sizes.

⬡Fashion & apparel
PickSky Blue

Sky Blue is a cool-leaning tone that flatters spring/summer collections and warmer skin undertones, while Cerulean leans cooler and is better suited to autumn/winter layering.

▣Interior design & walls
PickSky Blue

Sky Blue is the more muted of the two (71% saturation) and sits more calmly on large wall surfaces, while Cerulean's higher chroma can overwhelm a room when used beyond accent pieces.

When to Use Sky Blue vs Cerulean in Design

Use Sky Blue for:
●Cool, techy, digital branding
●Water, ice, cleaning products
●Fresh modern UI accents
●Summer and tropical themes
●Youthful playful design
Use Cerulean for:
●Cool, techy, digital branding
●Water, ice, cleaning products
●Fresh modern UI accents
●Summer and tropical themes
●Youthful playful design

Sky Blue and Cerulean Hex Codes, RGB & HSL

Sky Blue#87CEEB

Sky Blue (#87CEEB) is a light, vivid cyan with a cool undertone — it feels airy, soft, approachable and bright, energetic, eye-catching.

HEX
RGB
HSL
HSV
CMYK
PANTONE
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Tints
Cerulean#007BA7

Cerulean (#007BA7) is a dark, vivid cyan with a cool undertone — it feels rich, serious, substantial and bright, energetic, eye-catching.

HEX
RGB
HSL
HSV
CMYK
PANTONE
Shades
Tints

Sky Blue and Cerulean WCAG Contrast Ratios

Text legibility depends on the contrast ratio between foreground and background. WCAG 2.1 AA requires at least 4.5:1 for normal text and 3:1 for large text; AAA requires 7:1. Use these numbers to choose accessible combinations for your design.

Sample text preview
Sky Blue text on white
1.74:1Fail
Sample text preview
Sky Blue text on black
12.06:1AAA
Sample text preview
Cerulean text on white
4.78:1AA
Sample text preview
Cerulean text on black
4.39:1AA Large
Sample text preview
Sky Blue text on Cerulean
2.75:1Fail
Sample text preview
Cerulean text on Sky Blue
2.75:1Fail

Explore Sky Blue and Cerulean individually

Each color has a dedicated page with shades, tints, CSS name, pairings, and color psychology.

Sky Blue color page#87CEEB · shades, tints, pairingsCerulean color page#007BA7 · shades, tints, pairings

More Sky Blue and Cerulean Comparisons

Sky BluevsGoldTealvsCeruleanAzurevsSky BlueAzurevsCeruleanSky BluevsAzureCeruleanvsAzureSky BluevsCoralCeruleanvsCobaltSky BluevsWhiteCharcoalvsCeruleanSky BluevsSky BlueGunmetalvsCerulean

Sky Blue vs Cerulean FAQ

What is the difference between sky blue and cerulean?+
The main difference between Sky Blue and Cerulean is brightness and saturation: both are cyan shades, but Sky Blue is lighter and Cerulean is more saturated. Sky Blue and Cerulean are often confused but have distinct differences in hue, saturation, and tone. Sky Blue (#87CEEB) and Cerulean (#007BA7) each suit different design contexts — understanding their differences helps you choose the right color for your project.
Is sky blue darker than cerulean?+
No. Cerulean is the darker of the two at 33% lightness, while Sky Blue sits higher at 73%.
Are sky blue and cerulean the same color?+
No. Sky Blue is #87CEEB and Cerulean is #007BA7. They differ by 1° in hue, 40% in lightness, and 29% in saturation.
Which is more saturated, sky blue or cerulean?+
Cerulean is more saturated. In HSL, Sky Blue has 71% saturation and Cerulean has 100% — Cerulean is the more vivid of the two, while Sky Blue reads as more muted.
Is sky blue warm or cool?+
Sky Blue (#87CEEB) is a cool cyan. Its hue sits at 197° on the color wheel, which places it in the cool range.
Is cerulean warm or cool?+
Cerulean (#007BA7) is a cool cyan. Its hue sits at 196° on the color wheel, which places it in the cool range.
Can you use sky blue and cerulean together?+
Yes. Both sky blue and cerulean are cyan shades, so they pair naturally in a monochromatic palette. Use cerulean as the dominant color and sky blue as the accent or highlight.
What color family does sky blue belong to?+
Sky Blue belongs to the cyan family. Its HSL is 197°, 71%, 73% — a cool tone within the broader cyan group.
What is the hex code for sky blue?+
The hex code for Sky Blue is #87CEEB. In RGB, that's rgb(135, 206, 235), and in HSL it's hsl(197, 71%, 73%).
What is the hex code for cerulean?+
The hex code for Cerulean is #007BA7. In RGB, that's rgb(0, 123, 167), and in HSL it's hsl(196, 100%, 33%).