Prussian Blue

#01365B

General Information about Prussian Blue

Prussian Blue, represented by the hexadecimal color code #01365B, is a deep, rich shade of blue with a slightly greenish undertone. It is named after the pigment 'Prussian blue,' which was one of the first synthetically produced pigments, discovered accidentally in the early 18th century. This pigment gained widespread use due to its stability, intensity, and relatively low cost. The color is associated with qualities like depth, stability, and authority. In color psychology, blue is often linked to trust, loyalty, and calmness, making Prussian Blue suitable for applications where conveying a sense of reliability and confidence is important. Its historical significance and unique visual properties make it a popular choice in various design contexts.

The hex color #01365B, also known as Prussian Blue, presents some accessibility challenges, particularly when used as text on a white background. Its low lightness value (close to black) means that it requires careful consideration of contrast ratios. According to WCAG guidelines, sufficient contrast is crucial for users with visual impairments to be able to perceive text and interactive elements. A contrast ratio of at least 4.5:1 is recommended for normal text, and 3:1 for large text (14pt bold or 18pt regular). When using #01365B for text, ensure that the background color provides adequate contrast to meet these guidelines. If the background is a light color, consider lightening the text color or using a darker background to improve readability. Tools are available online to check contrast ratios and ensure compliance with accessibility standards. For decorative elements, these requirements are less strict, however it is important to consider the overall user experience.

Shades

Digital Color Formats

RGB
1 54 91
RGB1 54 91
Red
Green
Blue
HSL
204.67deg 97.83% 18.04%
204.6797.8318.04HSL
Hue
Saturation
Lightness
HWB
204.67deg 0.39% 64.31%
204.670.3964.31HWB
Hue
Whiteness
Blackness
hex#01365B
rgb1 54 91
hsl204.67deg 97.83% 18.04%
cmyk98.9% 40.66% 0% 64.31%
hwb204.67deg 0.39% 64.31%
xyz-d650.03 0.03 0.1
oklch0.3231 0.083 246.42
oklab0.3231 -0.03 -0.08
CMYK
98.9% 40.66% 0% 64.31%
98.940.66064.31CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.03 0.03 0.1
0.030.030.1XYZ
X
Y
Z
OKLCH
0.3231 0.083 246.42
0.32310.083246.42LCH
Lightness
Chroma
Hue
OKLAB
0.3231 -0.03 -0.08
0.3231-0.03-0.08LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

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