Sumi

The deep black of Japanese ink, soul of calligraphy and ink painting

HEX#27221E
RGBrgb(39, 34, 30)
HSLhsl(27, 13%, 14%)
HSVhsv(27, 23%, 15%)
CMYKcmyk(0%, 13%, 23%, 85%)
HEXA#27221EFF
RGBArgba(39, 34, 30, 1)
HSLAhsla(27, 13%, 14%, 1)
OKLCHoklch(51.5%, 0.013, 63)
LCHlch(43.7%, 3.1, 152)

🎨 Color Palettes

Analogous2-3 adjacent hues (≤60°)
Copy
#281F20
Copy
#27221E
Copy
#28281F
Triadic3 hues spaced 120° apart
Copy
#27221E
Copy
#1F2823
Copy
#231F28
Split ComplementaryMain color + colors adjacent to its complement
Copy
#27221E
Copy
#1F2828
Copy
#1F2028
Complementary2 hues spaced 180° apart
Copy
#27221E
Copy
#1F2428
Tetradic (Rectangle)4 hues forming a rectangle
Copy
#27221E
Copy
#20281F
Copy
#1F2428
Copy
#281F28
MonochromaticSingle hue with varying saturation and lightness
Copy
#000000
Copy
#000000
Copy
#27221E
Copy
#62564B
Copy
#99887A

♿ WCAG Contrast Colors

Learn More →
Aa14px Body
High Contrast Text
#B6AAA0Ratio 6.9:1AA
Suitable for body text, headings, and primary content, ensuring readability for all users
Aa14px Body
Standard Text
#8A896ARatio 4.4:1AA Large
Suitable for regular body content, meeting WCAG AA standards
Aa14px Body
Large Text / UI Components
#657057Ratio 3:1AA Large
Suitable for large text (≥18px bold or ≥24px), icons, UI component boundaries
Aa14px Body
Decorative / Dividers
#43564CRatio 2:1Fail
Suitable for decorative elements, dividers, non-essential text
Lightness VariationFixed hue and saturation, stepwise lightness adjustment ±30%
#1D1916Copy
#1D1916Copy
#1D1916Copy
#28231FCopy
#453C35Copy
#62564BCopy
#7F6F62Copy
Saturation VariationFixed hue and lightness, stepwise saturation adjustment ±30%
#272320Copy
#272320Copy
#272320Copy
#28231FCopy
#2C231BCopy
#2F2318Copy
#332214Copy
Lightness + Saturation Mixed VariationSimultaneous lightness and saturation adjustment
#2C2621Copy
#2C2621Copy
#2C2621Copy
#2C2621Copy
#3F352CCopy
#5B4839Copy
#7A5C43Copy
Hue Fine-TuningFixed saturation and lightness, stepwise hue fine-tuning ±15°
#28211FCopy
#28221FCopy
#28221FCopy
#28231FCopy
#28241FCopy
#28251FCopy
#28261FCopy

💡 Use Cases

🖌️

Shodo & Ink Painting

Japanese calligraphy (Shodo) and ink painting (Sumi-e) use Japanese Sumi as their primary medium, unfolding a spiritual world of ink's five colors on rice paper or Washi, an important path for self-cultivation.

🍵

Tea Room Hanging Scrolls

Sumi ink hanging scrolls displayed in the tokonoma alcove of a tea room set the overall spatial atmosphere. They are the soul of wabi-sabi tea ceremony, guiding guests to calm their minds and savor the moment.

🎨

Contemporary Ink Art

Contemporary Japanese ink wash artists use Sumi for abstract expression. The spreading of Sumi's varying densities creates strong visual tension, connecting traditional spirit with avant-garde expression.

🏯

Temple Spaces

The studies and main halls of Zen temples use Sumi-colored wooden structures contrasted with white walls to create a solemn and pure practice environment, clarifying the mind of the meditator.

📜 Origin & History

Japanese Sumi ink originated from Chinese ink-making technology, entering Japan with the introduction of Buddhism and Chinese characters in the 7th century. The Shōsōin Repository from the Nara period still preserves Tang Dynasty ink sticks brought back by Japanese envoys. These precious Chinese inks became the blueprint and the highest standard pursued for Japanese ink.

During the Heian period, Japan began producing pine soot ink domestically. Ink makers in Kyoto, while imitating Chinese techniques, gradually developed a unique Japanese Sumi style based on local pine wood and water quality characteristics. The black of Japanese Sumi is slightly warmer with a brownish undertone compared to Chinese ink, related to the oil content of Japanese pine and the fiber properties of Washi paper.

From the Kamakura to Muromachi periods, Zen culture flourished in Japan, and ink was elevated from a practical writing tool to a part of spiritual practice. 'Bokuseki' (ink traces) written by Zen monks were seen as direct expressions of Zen mind, each stroke and ink mark representing present-moment awareness. Concurrently, ink wash painting was introduced from China to Japan, with painter-monks like Sesshū using Sumi to express the empty stillness of the Zen realm.

In the Edo period, with the popularization of temple schools and the flourishing of townsman culture, the demand for ink surged dramatically. Famous ink shops like 'Kobaien' in Nara enjoyed national fame, and the variety of inks greatly expanded. In the tea ceremony, Sumi-colored tea utensils and hanging scrolls became core elements of wabi-sabi aesthetics, Sumi representing the supreme aesthetic of simplicity and withered austerity.

In modern times, Japan has pushed the artistic expressiveness of Sumi to the extreme. The calligraphy reforms of the Meiji era, the experiments of the avant-garde Bokushō group in the Showa period, and the explorations of contemporary ink painting artists in abstract Sumi have all allowed Japanese Sumi to transcend traditional painting and calligraphy. Today, the color of Japanese Sumi carries the aesthetic philosophies of 'Ma' (interval), 'Yohaku' (blank space), and 'Yūgen' (mysterious depth), influencing the world.

🧠 Color Psychology

Quiet & Withered PlainnessThe warm brown-black tone of Japanese Sumi, like the sand patterns in a dry landscape garden, brings the silent feeling of wabi-sabi, allowing one to comprehend the depth of time and the authenticity of life in rustic simplicity.
Profound ZenA single brushstroke of Sumi is the entirety of the present moment. Sumi inspires an understanding of the Zen concept 'not relying on words, directly pointing to the heart', guiding one into a deep, selfless meditation.
Introspective & Self-RestrainedThe calm tone of Sumi suppresses outward restlessness, urging the spirit to inquire inward, cultivating self-reflective, restrained, and highly self-disciplined personal strength.
Subtle Profundity (Yūgen)Japanese Sumi does not pursue the ultimate black, but a deep gray that leaves an aftertaste, aligning with the aesthetic ideal of 'Yūgen'—beauty hidden in haziness, meaning beyond words.
Time AccumulatedThe warm black seems oxidized by long years. Sumi conveys a sense of eternity coexisting with time, allowing one to feel the weight of history.
Power of SimplicityDiscarding all superfluous colors and decorations, Sumi demonstrates the strongest expressive power in the most unadorned form, proving the Eastern wisdom of 'less is more'.