Prussian Blue

#003657

General Information about Prussian Blue

Prussian Blue, represented by the hexadecimal color code #003657, is a dark shade of blue with a rich history. It was one of the first synthetically produced pigments, discovered accidentally in the early 18th century. Known for its intense color and lightfastness, Prussian Blue quickly became a popular choice among artists and dyers. The chemical compound responsible for this color is iron(III) hexacyanoferrate(II). The color's depth and saturation make it ideal for creating a sense of depth and sophistication in visual arts. It is widely used in printing inks, paints, and dyes. In digital applications, Prussian Blue offers a strong, grounding presence, making it suitable for backgrounds, accents, and branding elements that require a touch of seriousness and reliability. Its name originates from its historical association with the Prussian army, for whom it was often used in uniforms.

The hex color #003657, a deep shade of Prussian Blue, presents specific accessibility considerations for web development. Its low luminance value (dark color) necessitates careful pairing with text and interactive elements to ensure sufficient contrast. According to WCAG guidelines, the contrast ratio between text and background should be at least 4.5:1 for normal text and 3:1 for large text. When using #003657 as a background, it is crucial to use light-colored text (e.g., white or very light gray) to meet these standards. Insufficient contrast can make content difficult or impossible to read for users with visual impairments. Also, avoid using this color for critical user interface elements without a high contrast ratio. Furthermore, consider providing alternative color schemes that offer better contrast options for users with specific needs. Proper use of ARIA attributes can also enhance accessibility by providing semantic information to assistive technologies about the purpose and state of elements using this color.

Shades

Digital Color Formats

RGB
0 54 87
RGB0 54 87
Red
Green
Blue
HSL
202.76 100% 17.06%
202.7610017.06HSL
Hue
Saturation
Lightness
HWB
202.76 0% 65.88%
202.76065.88HWB
Hue
Whiteness
Blackness
hex#003657
rgb0 54 87
hsl202.76 100% 17.06%
cmyk100% 37.93% 0% 65.88%
hwb202.76 0% 65.88%
xyz3.04 3.33 9.5
CMYK
100% 37.93% 0% 65.88%
10037.93065.88CMYK
Cyan
Magenta
Yellow
Key
XYZ
3.04 3.33 9.5
3.043.339.5XYZ
X
Y
Z

Alternative colors

Applications

Complementary color

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