Crow Blue (Raven Black)

A greenish-black like crow feathers, a subdued, reserved dark blue-grey

HEX#424C50

RGBrgb(66, 76, 80)

HSLhsl(197, 10%, 29%)

HSVhsv(197, 17%, 31%)

CMYKcmyk(18%, 5%, 0%, 69%)

HEXA#424C50FF

RGBArgba(66, 76, 80, 1)

HSLAhsla(197, 10%, 29%, 1)

OKLCHoklch(66.2%, 0.012, 222)

LCHlch(60.9%, 10.7, 220)

🎨 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

#E0E4E6Ratio 6.9:1AA

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

Aa14px Body

Standard Text

#B6B9C3Ratio 4.5:1AA

Suitable for regular body content, meeting WCAG AA standards

Aa14px Body

Large Text / UI Components

#9A94A8Ratio 3:1AA Large

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

Aa14px Body

Decorative / Dividers

#897082Ratio 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%

#151819

#1C2022

#22282A

#2C3335

#323B3E

#3C4549

#434D51

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

#474B4D

#464C4E

#454C4F

#444D50

#434D51

Lightness + Saturation Mixed VariationSimultaneous lightness and saturation proportional scaling

#161718

#1D1F20

#242728

#2E3233

#343A3D

#3C4548

#434D51

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

#435151

#435051

#434E51

#434D51

#434C51

#434B51

#434951

💡 Use Cases

📿

Taoist Robes

Modified Hanfu or linen shirts, using ultra-low saturation to emphasize texture and project an ethereal quality.

🎸

Independent Music

Post-rock or darkwave album visuals with noise textures, crafting somber, literary undertones.

🚗

Stealth Wraps

Matte paint on business vehicles, understated as suits yet revealing rich layers under urban light.

⌨️

Custom Keycaps

Popular dark-themed mechanical keyboard color, paired with blank keycaps—a secret sign of geek sophistication.

📜 Origin & History

Crow Blue is one of China's traditional colors, derived from the blue-purple-black cast of crow feathers in backlight. Northern Song literati held it in high esteem—Su Dongpo's 'black crows flying south' in his Ode to the Red Cliff evokes this very hue.

In the Ming and Qing dynasties, crow blue became the daily robe color of the scholar-official class. Zhu Xi's Confucian influence restricted commoners from wearing bright colors; crow blue's understated yet characterful texture perfectly matched the scholar's contented poverty.

In ink-wash painting, crow blue is essential for rendering winter crows, withered branches, and mountain shadows. When light ink proved insufficient for depth, mixing in a little flower blue created crow blue for rubbing in the desolate dusk.

In the modern China-chic revival, crow blue—second only to black in representing Eastern minimalism—is used in high-end menswear and noise-canceling industrial products. It abandons flashiness, using an unassuming exterior to contain superior performance and quality.

🧠 Color Psychology

LonelyThe estranged sensation of withered vines, old trees, and dusky crows—finding inner truth in profound stillness.

ReservedA chaotic zone beyond pure black, harboring unfathomable thoughts like ancient strategists' hidden schemes.

SilentExtremely mute, refusing superfluous communication, choosing endurance and discretion in facing the world.

IntegrityProud integrity maintained in poverty, unchanged by external decay—the visual expression of being unmoved by poverty.

RusticA return to simplicity, stripping all pretense to touch the raw, unadorned texture of matter.

PerceptiveSharpness that sees in darkness, with raven-like cleverness, seeing through flashy trickery.

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