Cerulean Blue

#2B51BB

General Information about Cerulean Blue

Cerulean Blue, represented by the hex code #2B51BB, is a medium-dark shade of blue often associated with calmness, trustworthiness, and stability. It falls within the blue color family, known for its association with the sky and sea. This particular shade has a moderate saturation, giving it a balanced appearance that is neither too muted nor too intense. In the RGB color model, #2B51BB consists of 17.1% red, 31.8% green, and 73.3% blue. Its CMYK values are 76.6% cyan, 56.2% magenta, 0% yellow, and 26.7% black. Cerulean Blue is often used in branding and design to convey a sense of professionalism and reliability.

The hex color #2B51BB, a shade of Cerulean Blue, presents some accessibility challenges. Its relatively low luminance of approximately 15% means that it requires careful consideration when used for text or interactive elements. To ensure readability and usability, it's crucial to use it with a light background color, such as white or a very pale yellow. A contrast ratio of at least 4.5:1 is recommended for normal text and 3:1 for large text according to WCAG guidelines. This color might not be suitable for users with visual impairments if contrast is not properly addressed. Also, avoid using this color alone to convey important information, as color blindness affects a significant portion of the population. Providing additional cues, such as labels or icons, can improve accessibility. Careful testing with accessibility tools and users is advised to validate the color's usability.

Shades

Digital Color Formats

RGB
43 81 187
RGB43 81 187
Red
Green
Blue
HSL
224.17deg 62.61% 45.1%
224.1762.6145.1HSL
Hue
Saturation
Lightness
HWB
224.17deg 16.86% 26.67%
224.1716.8626.67HWB
Hue
Whiteness
Blackness
hex#2B51BB
rgb43 81 187
hsl224.17deg 62.61% 45.1%
cmyk77.01% 56.68% 0% 26.67%
hwb224.17deg 16.86% 26.67%
xyz-d650.13 0.1 0.48
oklch0.4731 0.1729 265.29
oklab0.4731 -0.01 -0.17
CMYK
77.01% 56.68% 0% 26.67%
77.0156.68026.67CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.13 0.1 0.48
0.130.10.48XYZ
X
Y
Z
OKLCH
0.4731 0.1729 265.29
0.47310.1729265.29LCH
Lightness
Chroma
Hue
OKLAB
0.4731 -0.01 -0.17
0.4731-0.01-0.17LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

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