Light Indigo

Bright light blue dyed from dayflower petals

HEX#1A85B8
RGBrgb(26, 133, 184)
HSLhsl(199, 75%, 41%)
HSVhsv(199, 86%, 72%)
CMYKcmyk(86%, 28%, 0%, 28%)
HEXA#1A85B8FF
RGBArgba(26, 133, 184, 1)
HSLAhsla(199, 75%, 41%, 1)
OKLCHoklch(75.6%, 0.103, 220)
LCHlch(72.7%, 39.5, 227)

🎨 Color Palettes

Analogous2-3 adjacent hues (≤60°)
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#1AB79A
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#1A85B8
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#1A37B7
Triadic3 hues spaced 120° apart
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#1A85B8
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#B71A85
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#85B71A
Split ComplementaryMain color + colors adjacent to its complement
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#1A85B8
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#B71A37
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#B79A1A
Complementary2 hues spaced 180° apart
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#1A85B8
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#B74C1A
Tetradic (Rectangle)4 hues forming a rectangle
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#1A85B8
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#9A1AB7
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#B74C1A
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#37B71A
MonochromaticSingle hue with varying saturation and lightness
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#010304
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#0D445E
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#1A85B8
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#51B7E6
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#AADCF3

♿ WCAG Contrast Colors

Learn More →
Aa14px Body
High Contrast Text
#FFFFFFRatio 4.1:1AA Large
Suitable for body text, headings, and primary content, ensuring readability for all users
Aa14px Body
Standard Text
#FFFFFFRatio 4.1:1AA Large
Suitable for regular body content, meeting WCAG AA standards
Aa14px Body
Large Text / UI Components
#E2D7F9Ratio 3:1AA Large
Suitable for large text (≥18px bold or ≥24px), icons, UI component boundaries
Aa14px Body
Decorative / Dividers
#F098D4Ratio 2:1Fail
Suitable for decorative elements, dividers, non-essential text
Lightness VariationFixed hue and saturation, stepwise lightness adjustment ±30%
#072431Copy
#0D445ECopy
#14658ACopy
#1A85B7Copy
#24A4E0Copy
#51B7E6Copy
#7EC9EDCopy
Saturation VariationFixed hue and lightness, stepwise saturation adjustment ±30%
#3A7A98Copy
#2F7EA2Copy
#2581ADCopy
#1A85B7Copy
#1089C1Copy
#058DCCCopy
#008FD1Copy
Lightness + Saturation Mixed VariationSimultaneous lightness and saturation adjustment
#12313FCopy
#184B63Copy
#1B6688Copy
#1C81B0Copy
#1A9EDBCopy
#2FB2EECopy
#50C2F7Copy
Hue Fine-TuningFixed saturation and lightness, stepwise hue fine-tuning ±15°
#1AADB7Copy
#1A9FB7Copy
#1A92B7Copy
#1A85B7Copy
#1A78B7Copy
#1A6BB7Copy
#1A5EB7Copy

💡 Use Cases

📄

Washi Stationery

Light Indigo Washi paper used for writing important letters; the light blue ground with clear ink conveys the Japanese subtlety of 'sending deep feelings with this thin color.'

👘

Summer Kimono

Wearing a Light Indigo Yukata in high summer visually brings a sensation of a cool breeze, making it a refreshing outfit for firework festivals and evening cool-out cruises.

🍶

Glass Sakeware

Hand-blown light blue glass cups for chilled sake; condensation forms on the cup wall as the Light Indigo and the sake's clarity enhance each other's beauty.

🎨

Watercolor Sketching

Mixing Light Indigo into the picture during outdoor sketching to capture the fleeting bright blue tone in the morning or evening sky.

📜 Origin & History

Light Indigo is a very distinctive plant-dyed blue in Japanese traditional colors. It originates from the juice of the Asiatic dayflower (tsuyukusa) petals. The dayflower's petals are blue but fade extremely easily; the ancients discovered that dipping paper or cloth in the petal juice could yield a temporarily vivid light blue.

Light Indigo was already used for dyeing paper in the Nara period. Precious documents written on Light Indigo paper are preserved in the Shosoin Repository. This paper dyeing method was called 'flower dyeing'; because dayflower juice could not permanently fix its color, Light Indigo paper was regarded as precious as a 'once-in-a-lifetime' encounter.

In the Heian period, Light Indigo entered the noble clothing system. Precisely because it faded easily, it was considered tasteful—just as cherry blossoms are more precious for falling easily. Noble men and women wore Light Indigo garments on specific occasions, expressing a cherishing of fleeting beauty and an appreciation for the beauty of impermanence.

Edo period Ukiyo-e artists used Light Indigo to depict dawn skies and early spring streams. In Harunobu Suzuki's prints of beautiful women, Light Indigo was used to paint the background of a beauty combing her hair by the window in the morning, creating a wonderful contrast between the pale blue and the beauty's red lips.

After the invention of modern synthetic dyes, a non-fading Light Indigo became widely available. Today, Light Indigo symbolizes a unique Japanese aesthetic preference for 'transience' and 'freshness.' Its slightly cool, vivid light blue, like a morning dew-kissed dayflower, is a microcosm of a Japanese summer morning.

🧠 Color Psychology

Morning RadianceLike the sky color at first light, bringing the fresh motivation of 'the morning is the start of the day' and new hope.
Once-in-a-LifetimeThe fleeting beauty that easily fades reminds one to cherish the present, treating every encounter and experience with one's whole heart.
Pure and ImmaculateAn unadulterated blue directly dyed from petals, evoking a newborn-like purity and authenticity, washing away worldly contamination.
Light and FreeThe non-heavy, vivid light blue makes the heart dance lightly, shedding the heavy burden of obsessions and maintaining a graceful calm amidst serious matters.
Keen SensibilityThe subtle blue tone cultivates a delicate sensitivity to color, enhancing the ability to discover and perceive beauty in everyday landscapes.
Declaration of YouthThe vivid blue is like youthful spirit, representing an uncompromising attitude of youth and a passionate yearning for ideals.