Prussian Blue

#013356

General Information about Prussian Blue

Prussian Blue, represented by the hex code #013356, is a deep, saturated shade of blue with a rich history. It was one of the first modern synthetic pigments, discovered accidentally in the early 18th century. Chemically, it's an iron hexacyanoferrate, giving it its distinctive color. The pigment was widely used in paints, inks, and dyes, prized for its stability and affordability. The color is often associated with sophistication, depth, and formality, making it a popular choice in various applications, from art to design. Its dark hue makes it a strong and impactful color, though it requires careful consideration for accessibility, particularly in digital contexts, due to its low lightness value. The color got the name due to its usage in military uniforms in the 18th and 19th century.

The hex color #013356, a deep shade of Prussian Blue, presents significant accessibility challenges, particularly in web design. Its very low lightness value (dark color) means that it requires extremely light text or interface elements to meet WCAG (Web Content Accessibility Guidelines) standards for contrast. Using it with dark or mid-toned colors will likely result in insufficient contrast, making content difficult or impossible for users with visual impairments to read or interact with. A contrast ratio of at least 4.5:1 is recommended for normal text and 3:1 for large text. Before using this color for important visual elements, careful contrast testing is essential using online contrast checkers. A lighter tint of #013356 or using it sparingly as an accent color may improve accessibility.

Shades

Digital Color Formats

RGB
1 51 86
RGB1 51 86
Red
Green
Blue
HSL
204.71deg 97.7% 17.06%
204.7197.717.06HSL
Hue
Saturation
Lightness
HWB
204.71deg 0.39% 66.27%
204.710.3966.27HWB
Hue
Whiteness
Blackness
hex#013356
rgb1 51 86
hsl204.71deg 97.7% 17.06%
cmyk98.84% 40.7% 0% 66.27%
hwb204.71deg 0.39% 66.27%
xyz-d650.03 0.03 0.09
oklch0.3114 0.0795 246.21
oklab0.3114 -0.03 -0.07
CMYK
98.84% 40.7% 0% 66.27%
98.8440.7066.27CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.03 0.03 0.09
0.030.030.09XYZ
X
Y
Z
OKLCH
0.3114 0.0795 246.21
0.31140.0795246.21LCH
Lightness
Chroma
Hue
OKLAB
0.3114 -0.03 -0.07
0.3114-0.03-0.07LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

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