Cerulean Blue

#2B4FBB

General Information about Cerulean Blue

Cerulean Blue, represented by the hexadecimal color code #2B4FBB, is a captivating shade of blue often associated with serenity, trustworthiness, and stability. It sits between azure and sky blue in the color spectrum. It's a popular choice in various design fields, including web design, graphic design, and interior decoration, because of its appealing aesthetic and its ability to evoke feelings of peace and confidence. The color is created by mixing red, green and blue light with different intensities. Specifically, #2B4FBB is composed of 17.1% red, 31% green and 73.3% blue. In the HSV/HSB color model, #2B4FBB has a hue of 221 degrees, a saturation of 76.6% and a brightness of 73.3%.

The color #2B4FBB, also known as Cerulean Blue, presents some accessibility challenges, particularly when used for text or interactive elements. Its relatively low lightness value (around 36%) means that it requires careful consideration of contrast ratios against background colors. To ensure readability and usability, it's crucial to pair it with a sufficiently light background, aiming for a contrast ratio of at least 4.5:1 for normal text and 3:1 for large text, as specified by WCAG guidelines. Using tools to evaluate color contrast is highly recommended during the design process. Also, avoid using this color as the sole indicator of functionality, such as in links or buttons, as users with color vision deficiencies may not be able to distinguish it effectively. Supplement color with other cues like underlines or labels to enhance accessibility.

Shades

Digital Color Formats

RGB
43 79 187
RGB43 79 187
Red
Green
Blue
HSL
225deg 62.61% 45.1%
22562.6145.1HSL
Hue
Saturation
Lightness
HWB
225deg 16.86% 26.67%
22516.8626.67HWB
Hue
Whiteness
Blackness
hex#2B4FBB
rgb43 79 187
hsl225deg 62.61% 45.1%
cmyk77.01% 57.75% 0% 26.67%
hwb225deg 16.86% 26.67%
xyz-d650.13 0.1 0.48
oklch0.4691 0.1754 265.81
oklab0.4691 -0.01 -0.17
CMYK
77.01% 57.75% 0% 26.67%
77.0157.75026.67CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.13 0.1 0.48
0.130.10.48XYZ
X
Y
Z
OKLCH
0.4691 0.1754 265.81
0.46910.1754265.81LCH
Lightness
Chroma
Hue
OKLAB
0.4691 -0.01 -0.17
0.4691-0.01-0.17LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

Buttons