Cobalt Green

The uniquely clear blue-green of the cobalt element—bright as glass, pure and icy.

HEX#66FF59

RGBrgb(102, 255, 89)

HSLhsl(115, 100%, 67%)

HSVhsv(115, 65%, 100%)

CMYKcmyk(60%, 0%, 65%, 0%)

HEXA#66FF59FF

RGBArgba(102, 255, 89, 1)

HSLAhsla(115, 100%, 67%, 1)

OKLCHoklch(92.3%, 0.151, 142)

LCHlch(92.8%, 60.7, 147)

🎨 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

#075700Ratio 6.8:1AA

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

Aa14px Body

Standard Text

#007531Ratio 4.5:1AA

Suitable for regular body content, meeting WCAG AA standards

Aa14px Body

Large Text / UI Components

#008F83Ratio 3:1AA Large

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

Aa14px Body

Decorative / Dividers

#5765FFRatio 3.4:1AA Large

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%

#096600

#0C8F00

#0FB800

#13E000

#1AFF05

#3FFF2E

#65FF57

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

#8FCD89

#88D581

#81DD78

#7AE670

#73EE68

#6CF75F

#65FF57

Lightness + Saturation Mixed VariationSimultaneous lightness and saturation proportional scaling

#264224

#2E6529

#338C2B

#33B927

#32E222

#4AF23A

#65FF57

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

#8FFF57

#81FF57

#73FF57

#65FF57

#57FF57

#57FF65

#57FF73

💡 Use Cases

💡

Cyberpunk

Interior decor and guiding light strips in virtual reality experience centers; this extremely unreal green maximizes the sense of immersion and futurism.

🔮

Astrology Accessories

Illustration colors for crystal balls or occult books; magic circles and spirits are depicted in Cobalt Green, adding a sense of eerie sanctity to rituals.

🕶️

Sunglass Lenses

The coating color for trendy sports sunglasses, providing excellent color rendition in snow or strong light, with a cutting-edge avant-garde look.

🎸

Synthwave

Album covers for synthwave music use Cobalt Green to draw grid lines and sunsets, performing the retro-futuristic 80s sci-fi aesthetic.

📜 Origin & History

Cobalt Green is a relatively short-lived pigment; after Swedish chemists discovered cobalt in the late 18th century, people combined cobalt with zinc and other elements in the early 19th century to fire this bright blue-green pigment.

Upon its introduction, it was immediately beloved by Romantic landscape painters like Turner because Cobalt Green possessed unparalleled translucency in rendering supernatural light effects such as pre-storm seas and auroras.

During the Impressionist period, Renoir discovered that Cobalt Green could excellently render the bluish veins and light shadows beneath skin, breaking the old rule of using only warm colors for skin in traditional portraiture.

In the modern era, due to the higher cost of cobalt pigments, this highly individualistic bright color mostly appears in high-end cosmetics and limited-edition art derivatives, maintaining an aloof sense of distance.

🧠 Color Psychology

Astounding and ShockingCobalt Green carries an unnatural chemical feel, like a laser beam slicing through the sky, representing an aesthetic violence that breaks norms and shocks the world.

Pure and IcyLike light emanating from deep within a polar glacier, Cobalt Green is cold and pure, rejecting vulgar warmth and displaying an ultimate ascetic beauty.

Surreal SensationIts brightness and hue are extremely rare in nature, thus carrying an unreal quality like an alien world or a dream, drawing one into surreal fantasy.

Unconventionally UniqueThis color is so difficult to master that it remains esoteric; it has thus become an identity marker for those unwilling to follow the crowd.

Keen IntuitionResonating with the blue-green frequency of the third eye chakra, Cobalt Green symbolizes keen intuition and insight beyond logical reasoning.

Technologically Forward-LookingLike the energy weapon beams in sci-fi movies, it represents humanity's desire to explore and conquer the infinite possibilities of future technology.

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