Traffic Blue (RAL 5017)

RAL traffic blue, a striking dark blue used for road signage

HEX#0E518D

RGBrgb(14, 81, 141)

HSLhsl(208, 82%, 30%)

HSVhsv(208, 90%, 55%)

CMYKcmyk(90%, 43%, 0%, 45%)

HEXA#0E518DFF

RGBArgba(14, 81, 141, 1)

HSLAhsla(208, 82%, 30%, 1)

OKLCHoklch(64.8%, 0.105, 233)

LCHlch(59.8%, 38.9, 243)

🎨 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

#DFEEFCRatio 6.9:1AA

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

Aa14px Body

Standard Text

#B9BBF8Ratio 4.5:1AA

Suitable for regular body content, meeting WCAG AA standards

Aa14px Body

Large Text / UI Components

#B986F3Ratio 3:1AA Large

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

Aa14px Body

Decorative / Dividers

#E9208BRatio 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%

#04182A

#062038

#072B4A

#093358

#0B3E6B

#0C497D

#0E518B

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

#334E66

#2D4F6C

#274F72

#214F78

#1A507F

#145085

#0E518B

Lightness + Saturation Mixed VariationSimultaneous lightness and saturation proportional scaling

#11171D

#141F29

#172A3B

#17324A

#163D60

#134876

#0E518B

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

#0E708B

#0E668B

#0E5B8B

#0E518B

#0E468B

#0E3C8B

#0E318B

💡 Use Cases

🛣️

Highway Signage

Exit and parking guidance signs across European motorway networks—accurately identifiable at high speeds by that deep blue.

🛡️

Payment Security

PCI security certification identifiers for Visa and online banking—traffic blue representing financial-grade encryption and clearing standards.

📄

Official Forms

Title bars on Schengen visa and residency extension forms—official blue regulating applicant behavior and responses.

🚔

Police Markings

Auxiliary stripes on German Federal Police vehicles and helicopters—traffic blue宣告 the state's irrefutable police power.

📜 Origin & History

RAL 5017 Traffic Blue was specified by the German Federal Ministry of Transport as the background color for autobahn signs. When Nazi Germany built the world's first highways in the 1930s, a standard blue rapidly identifiable at high speeds was urgently needed—traffic blue became the cornerstone of traffic engineering.

Following the Vienna Convention on Road Signs, European nations incorporated traffic blue into their traffic regulations. Regardless of language, when drivers see this dark blue sign, they instantly recognize service area and tourist attraction directions—a triumph of color semiotics.

This dark blue was selected through extensive ergonomic testing. Under halogen headlights, traffic blue produces appropriate high-contrast reflection without the glare-induced blindness of pure white—a crucial component of early passive safety.

Today, traffic blue has become a symbol of public trust. E-commerce official certifications, banking security tokens, and encrypted data transfer icons all borrow from traffic blue's visual equity—conveying regulated, protected, standard-compliant reassurance to users.

🧠 Color Psychology

RegulatoryThe written law above custom—executed with absolute precision, the final arbiter of right-of-way, admitting no ambiguity or sophistry.

CompliantProducts and processes strictly following ISO-certified standards—all parameters traceable, eliminating unauthorized modifications.

GuidingProviding the sole correct navigation through complex information highways—instilling confidence even in unfamiliar systems.

ContractualCommercial commitment based on civil law and credit—affixing this deep blue equals signature, with corporate reputation as collateral.

OfficialThe color of continental European government—its presence representing enforcement and public service, extinguishing rule-breaking intentions at inception.

FortifiedThe iron wall of security levels—anti-hacker moats, impregnable firewalls in the information war.

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