Prussian Blue

#042F59

General Information about Prussian Blue

Prussian Blue, represented by the hex code #042F59, is a dark shade of blue with historical significance, named after the pigment originally produced in Prussia. This color evokes feelings of trust, stability, and sophistication. It is a popular choice in various fields, including web design, graphic design, and fashion. In the RGB color model, its values are R:4, G:47, B:89. In the CMYK color model, its values are C:95, M:47, Y:0, K:65. The color has a low saturation and lightness, making it a subtle yet impactful choice. Its depth and richness allow it to be used as a primary or accent color, depending on the desired effect and the aesthetic you are trying to create.

The hex color #042F59, also known as Prussian Blue, presents some accessibility challenges, particularly when used as a foreground color on a white or light-colored background. Its low lightness value (approximately 9%) results in a low contrast ratio, potentially failing WCAG (Web Content Accessibility Guidelines) standards for text and non-text contrast. A contrast ratio of at least 4.5:1 is recommended for normal text and 3:1 for large text. To improve accessibility, it is recommended to use this color with lighter shades to ensure sufficient contrast. Tools such as WebAIM's Contrast Checker can be used to evaluate contrast ratios. When using #042F59 for interactive elements such as links or buttons, providing additional visual cues like underlines or borders are vital for users with visual impairments. This ensures all users can perceive and interact with the content effectively. Also, consider color blindness when designing web interfaces and always test the design using available tools.

Shades

Digital Color Formats

RGB
4 47 89
RGB4 47 89
Red
Green
Blue
HSL
209.65deg 91.4% 18.24%
209.6591.418.24HSL
Hue
Saturation
Lightness
HWB
209.65deg 1.57% 65.1%
209.651.5765.1HWB
Hue
Whiteness
Blackness
hex#042F59
rgb4 47 89
hsl209.65deg 91.4% 18.24%
cmyk95.51% 47.19% 0% 65.1%
hwb209.65deg 1.57% 65.1%
xyz-d650.03 0.03 0.1
oklch0.3038 0.0877 252.71
oklab0.3038 -0.03 -0.08
CMYK
95.51% 47.19% 0% 65.1%
95.5147.19065.1CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.03 0.03 0.1
0.030.030.1XYZ
X
Y
Z
OKLCH
0.3038 0.0877 252.71
0.30380.0877252.71LCH
Lightness
Chroma
Hue
OKLAB
0.3038 -0.03 -0.08
0.3038-0.03-0.08LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

Buttons