What is Usuao (light blue)? An explanation of the origin, history, and color scheme of this traditional Japanese color.

Japanese Color Encyclopedia
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薄青の色見本 HEX #93B69C
Japanese color name light blue
reading usuao
HEX #93B69C
RGB 147, 182, 156
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What is "pale blue"? Origin and etymology

As its name suggests, Usu-ao (light blue) is a traditional Japanese color derived from a lighter shade of "blue." However, the "blue" referred to here is not just the modern blue, but also the ancient color concept of "ao," which includes green. Therefore, Usu-ao has been recognized not simply as a pale blue, but as a calm, greenish hue. This ambiguity creates the profound depth unique to traditional Japanese colors.

It is believed that indigo (Persicaria tinctoria) was primarily used as a dye. This delicate hue was achieved by reducing the concentration of the indigo dye or by decreasing the number of dyeing cycles. It is also said that such a refreshing, pale blue-green color can be obtained by "fresh leaf dyeing," which involves dyeing directly from fresh indigo leaves. The possibility that it was created in combination with other dyes has also been suggested.

Light blue historical background

Light blue is a very old color name, appearing in the Engishiki, a legal code compiled during the Heian period. In the section on the Imperial Sewing Bureau, "light blue" is listed as one of the dyed products used by the imperial court, indicating that it was a publicly recognized color even then. This fact suggests that light blue was not merely a commonly used color name, but played a part in an institutionalized color culture.

Light blue was also used in "kasane no irome" (layered color combinations), which reflected the refined aesthetic sense of the Heian aristocracy. For example, in "unohana gasane," a type of early summer attire, it is said that a combination of white on the outside and light blue on the inside was used. This expressed a cool and refreshing sense of the season. Light blue also frequently appears in literary works as the color of aristocratic clothing.

From the Kamakura period onward, as indigo dyeing became widespread among the samurai class and commoners alike, pale indigo blue also became a more familiar color. During the Edo period, it was used in various everyday items such as yukata and tenugui, which were the everyday clothes of commoners, and was cherished by people as a color that evoked coolness. It is thought that its subdued hue resonated with the spirit of "iki" (sophistication) that avoided ostentation.

Related literature, waka poetry, and seasonal words

Light blue is sometimes described as the color of clothing worn by characters in Heian period literature, particularly in works like "The Tale of Genji" and "The Pillow Book." For example, it appears in expressions such as "light blue court robe" or "light blue garment," and was depicted as the color of elegant and cool attire worn by people of high status. This is an example of the rich sense of color in the aristocratic society of that time.

Because of the refreshing and tranquil feeling this color evokes, it is often used in waka and haiku poetry to describe summer waterside scenes, the sky after the rain, and the colors of distant mountains. Even if the word "pale blue" is not used directly, a delicate sense of color like this is present in the background of the scene descriptions. Although it is not a directly recognized seasonal word, it is a color that has a strong affinity with summer seasonal words such as "early summer heat" and "green leaves."

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Light blue color scheme proposal

light blue
White training
Walnut dyeing
generation color

White training (#FFFFFF)

This color scheme maximizes the refreshing and clean feel of light blue. The pure white of the white base accentuates the delicate greenish tint of the light blue, creating an elegant and refreshing impression. It is suitable for expressing the feeling of summer and a clean image.

Walnut dyed (#A58F86)

The cool, refreshing shade of pale blue and the warm brown of walnut dye complement each other perfectly. The harmony of these earthy colors, reminiscent of trees and soil in nature, creates a calm, reassuring, and peaceful atmosphere.

Generated color (#FBF9F4)

The combination with a slightly yellowish off-white color, like unbleached silk or linen, adds a soft and natural touch to the light blue. This gentle and natural color scheme is easy to incorporate into interior design and fashion, regardless of whether it's Japanese or Western style.

Practical Scenes

In the world of traditional Japanese clothing, light blue is particularly favored for summer kimonos, yukata, and accessories such as obiage and obijime. Its cool hue gives a refreshing feeling to both the wearer and the viewer, adding an elegant touch to summer attire. It is also used in men's kimonos and hakama, creating a subtle yet intellectual impression.

In interior design, incorporating this color into fabrics such as wallpaper, curtains, and cushions brings a sense of calm and freshness to the space. It blends naturally not only with Japanese-style rooms but also with modern living rooms in natural or Scandinavian styles. Because of its relaxing effect, it's also ideal as a color for bedrooms and studies.

In web and graphic design, light blue is used to convey trustworthiness, sincerity, and a clean image. Using it as a base color for corporate websites, natural cosmetics sites, or environmentally related websites can create a design that is easy on the eyes and provides a sense of reassurance.

FAQ

❓ What is the difference between light blue and sky blue?
Light blue is a pale blue with a greenish tint, characterized by a calm, traditional Japanese hue reminiscent of diluted indigo dye. On the other hand, light blue generally refers to a brighter, clearer blue (closer to cyan), like the sky or water, and does not contain much green.
❓ What season does the color light blue evoke?
Its refreshing color evokes a strong association with the seasons from early summer to mid-summer. It has been used to express the freshness of the time when new greenery is beautiful, the damp air of the rainy season, and the desire for coolness in the middle of summer.
❓ How do you express "light blue" in English?
There isn't one single English word that perfectly corresponds to "Usuao," but based on its characteristics, it's sometimes described as "pale blue-green" or "light bluish green." When introducing it as a traditional Japanese color, it's sometimes simply written as "Usuao."

Japanese colors similar to light blue

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