Ocean Blue

The dark, mysterious blue of the abyssal ocean, vast and deep

HEX#00477D

RGBrgb(0, 71, 125)

HSLhsl(206, 100%, 25%)

HSVhsv(206, 100%, 49%)

CMYKcmyk(100%, 43%, 0%, 51%)

HEXA#00477DFF

RGBArgba(0, 71, 125, 1)

HSLAhsla(206, 100%, 25%, 1)

OKLCHoklch(60.9%, 0.118, 227)

LCHlch(55.5%, 41.5, 238)

🎨 Color Palettes

Analogous2-3 adjacent hues (≤60°)

Triadic3 hues spaced 120° apart

Split ComplementaryMain color + colors adjacent to its complement

Complementary2 hues spaced 180° apart

Tetradic (Rectangle)4 hues forming a rectangle

MonochromaticSingle hue with varying saturation and lightness

♿ WCAG Contrast Colors

Learn More →

Aa14px Body

High Contrast Text

#BDE2FFRatio 7:1AAA

Suitable for body text, headings, and primary content, ensuring readability for all users

Aa14px Body

Standard Text

#A3A9FFRatio 4.4:1AA Large

Suitable for regular body content, meeting WCAG AA standards

Aa14px Body

Large Text / UI Components

#AE70FFRatio 3:1AA Large

Suitable for large text (≥18px bold or ≥24px), icons, UI component boundaries

Aa14px Body

Decorative / Dividers

#DB007CRatio 2:1Fail

Suitable for decorative elements, dividers, non-essential text

📊 Color Scales

Online Color Picker → Gradient Generator →

Lightness VariationFixed hue and saturation, proportional lightness scaling 30%→100%

#001729

#001D33

#002642

#002E52

#003761

#004070

#004880

Saturation VariationFixed hue and lightness, proportional saturation scaling 40%→100%

#264359

#204460

#194566

#13466C

#0D4773

#064779

#004880

Lightness + Saturation Mixed VariationSimultaneous lightness and saturation proportional scaling

#0E151B

#0F1B24

#102333

#0E2C43

#0B3556

#073F69

#004880

Hue Fine-TuningFixed saturation and lightness, stepwise hue fine-tuning ±15°

#006880

#005E80

#005380

#004880

#003E80

#003380

#002880

💡 Use Cases

🌊

Deep-Sea Exploration

Submersible pressure hull coating—low visibility to avoid disturbing bioluminescent creatures, blending with the environment.

🎧

Noise-Canceling Headphones

Primary render color for premium headphones—visualizing noise isolation as deep as the abyss.

⚰️

Ocean Burials

Base color for eco-friendly reef urns—letting the departed's traces sink into endless blue, merging with the sea.

📖

Thriller Novels

Covers for suspense novels and true-crime documentaries—bottomless ocean blue keeping criminal secrets.

📜 Origin & History

Ocean Blue comes from the mesopelagic zone below 200 meters, where sunlight barely reaches. Here, blue wavelengths are heavily absorbed, creating a ghostly claustrophobic dark blue—the dominant color of Earth's largest ecosystem.

20th-century deep-sea exploration first revealed these colors to the public. Oceanographer William Beebe recorded the last hint of deep blue before darkness consumed the view from the bathysphere—words that profoundly moved a generation.

From Jules Verne's Nautilus to Titanic's Atlantic wreck, ocean blue symbolizes nature's unconquerable power and secrets buried deep beneath the sea.

In the 21st century, carrying the dual imagery of deep-sea pressure and silence, ocean blue has become a favorite in noise-canceling and pressure-resistant product design, representing watertight sealing and the fearless spirit of deep-sea exploration.

🧠 Color Psychology

ClaustrophobicThe extreme pressure of a lightless deep—but within this confinement, consciousness sinks deeper inward.

Awe-inspiringConfronted with irresistible deep-sea pressure, the individual feels insignificance and a worshipful reverence.

DevouringLike a blue hole absorbing light and sound, erasing traces in absolute spatial silence.

EnduringSurvival strategy under extreme pressure—like deep-sea fish with low metabolism, enduring prolonged darkness.

UnfathomableThe source of thalassophobia—the anxiety of the unknown fueling imagination, the best catalyst for suspense.

WeightyNot just visual heaviness, but mental pressure from thousands of meters of water—a dull, grounded gravity.

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