Indigo Cyan

Deep Dye of Indigo Plants, the Color of Ages

HEX#2E6B6B

RGBrgb(46, 107, 107)

HSLhsl(180, 40%, 30%)

HSVhsv(180, 57%, 42%)

CMYKcmyk(57%, 0%, 0%, 58%)

HEXA#2E6B6BFF

RGBArgba(46, 107, 107, 1)

HSLAhsla(180, 40%, 30%, 1)

OKLCHoklch(71%, 0.058, 196)

LCHlch(67.2%, 25.8, 203)

🎨 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

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Aa14px Body

High Contrast Text

#FFFFFFRatio 6.1:1AA

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

Aa14px Body

Standard Text

#D1DEEBRatio 4.5:1AA

Suitable for regular body content, meeting WCAG AA standards

Aa14px Body

Large Text / UI Components

#ADADDCRatio 2.9:1Fail

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

Aa14px Body

Decorative / Dividers

#C577C5Ratio 2:1Fail

Suitable for decorative elements, dividers, non-essential text

📊 Color Scales

Online Color Picker → Gradient Generator →

Lightness VariationFixed hue and saturation, stepwise lightness adjustment ±30%

#0F2424

#1F4747

#2E6B6B

#3D8F8F

#4DB2B3

#70C2C2

Saturation VariationFixed hue and lightness, stepwise saturation adjustment ±30%

#455454

#3D5C5C

#366363

#2E6B6B

#267373

#1F7A7A

#178282

Lightness + Saturation Mixed VariationSimultaneous lightness and saturation adjustment

#1F2E2E

#1C3030

#244747

#2E6666

#358888

#39ACAC

#44CACA

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

#2E6B5C

#2E6B61

#2E6B66

#2E6B6B

#2E666B

#2E616B

#2E5C6B

💡 Use Cases

👖

Indigo-Dyed Fabric

Indigo Cyan is the typical color of traditional indigo dyeing techniques, used for dyeing denim, batik, and blue calico, presenting a rustic and layered handmade aesthetic.

🏺

Ceramic Glaze

Indigo Cyan glaze on ceramics yields a quiet, deep blue-cyan effect, especially suitable for archaistic vessels, giving porcelain a restrained and weighty literati aura.

📜

Ancient Book Binding

Indigo Cyan is often used for the covers or cases of ancient books, protecting pages while reflecting a solemn and elegant scholarly atmosphere, deeply loved by bibliophiles.

🎋

Bamboo Weaving

Bamboo strips dyed with Indigo Cyan can be made into everyday objects like baskets and mats, blending nature with handcraftsmanship, adding a subtle color language to traditional artistry.

📜 Origin & History

Indigo Cyan is a natural dye extracted from plants like Polygonum indigo and Isatis indigo, with dyeing techniques traceable to the Zhou Dynasty in China. The verse 'Gathering indigo all day' in the 'Book of Songs' refers to harvesting indigo plants for dyeing clothes, making Indigo Cyan one of the earliest colors used by both commoners and in rituals.

By the Qin and Han dynasties, indigo dyeing had formed a complete process, from soaking and fermenting stems to precipitating the dye and maintaining the vat, with each step relying on the artisan's experience. Fabrics dyed with Indigo Cyan were resistant to washing and sun, with a deep hue, becoming the mainstream color for everyday clothing.

During the Tang and Song dynasties, the use of Indigo Cyan expanded from commoner clothing into literati, Taoist, and Buddhist culture. Taoists saw indigo as the color of 'mystery beyond mystery,' while Buddhist temples commonly used it for dyed robes and banners, symbolizing purity and detachment from worldly dust.

In the Ming and Qing dynasties, indigo blue complemented the blue of blue-and-white porcelain. Blue calico and batik crafts flourished in regions south of the Yangtze River and the Southwest. Indigo Cyan was no longer just a color but became a representative hue of local memory and folk art.

🧠 Color Psychology

ProfundityIndigo Cyan has low brightness and a subdued hue, providing a sense of infinite depth, stimulating curiosity and a desire for exploration, rich in philosophical and meditative quality.

IntrospectionIndigo Cyan directs the gaze inward, prompting a state of reflection, suitable for spaces and moments requiring self-examination, reading, or solitude.

MysteryLike the night sea and deep forests, Indigo Cyan carries an unknowable, mysterious tension, evoking associations with ancient legends, unknown cultures, and distant times.

StabilityDue to its proximity to dark tones, Indigo Cyan possesses high psychological stability, capable of providing a visual and emotional anchor for noisy environments.

OppressionExcessive or overly dark Indigo Cyan can bring feelings of stuffiness or even melancholy, especially in low-light conditions, requiring balancing with warm or bright colors.

HeritageIndigo Cyan carries the collective memory of agricultural civilization and handicraft, its hue reminiscent of hand-dyed cloth by ancestors, evoking familial and local emotions.

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