Prussian Blue

#003355

About Prussian Blue

Prussian Blue, represented by the hex code #003355, is a deep, saturated shade of blue with historical significance. It was one of the first synthetic pigments, discovered accidentally in the early 18th century. Chemically, it's an iron hexacyanoferrate complex. The color is known for its rich, intense hue and excellent lightfastness. Prussian Blue has been widely used in various applications, including paints, inks, and dyes. It's a popular color in art, particularly for landscapes and seascapes. Its distinctive shade results from the specific arrangement of iron and cyanide ions within its molecular structure. This pigment played a role in the development of blueprint technology due to its chemical properties.

The hex color #003355, a deep shade of Prussian Blue, presents some accessibility challenges. Its low luminance value means it requires careful consideration when used for text or interactive elements. According to WCAG guidelines, sufficient contrast is crucial for readability. When using #003355 as a background, ensure that the foreground text color provides a contrast ratio of at least 4.5:1 for normal text and 3:1 for large text. White or very light shades of yellow or green are good candidates for foreground text. Avoid pairing it with darker colors, as this will likely fail accessibility standards. Tools like WebAIM's contrast checker can help verify compliance. Using this color for purely decorative elements poses less of an accessibility concern, but keep the overall design in mind to prevent eye strain.

Shades

Digital Color Formats

RGB
0 51 85
RGB0 51 85
Red
Green
Blue
HSL
204deg 100% 16.67%
20410016.67HSL
Hue
Saturation
Lightness
HWB
204deg 0% 66.67%
204066.67HWB
Hue
Whiteness
Blackness
hex#003355
rgb0 51 85
hsl204deg 100% 16.67%
cmyk100% 40% 0% 66.67%
hwb204deg 0% 66.67%
xyz-d650.03 0.03 0.09
oklch0.3104 0.0784 245.18
oklab0.3104 -0.03 -0.07
CMYK
100% 40% 0% 66.67%
10040066.67CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.03 0.03 0.09
0.030.030.09XYZ
X
Y
Z
OKLCH
0.3104 0.0784 245.18
0.31040.0784245.18LCH
Lightness
Chroma
Hue
OKLAB
0.3104 -0.03 -0.07
0.3104-0.03-0.07LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

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