Cerulean Blue

#2B57BB

General Information about Cerulean Blue

Cerulean Blue, represented by the hexadecimal color code #2B57BB, is a captivating shade of blue with a rich history and versatile applications. It is located in the blue region of the color spectrum, radiating a sense of calmness, trust, and stability. This color is often associated with the sky and the sea, evoking feelings of serenity and tranquility. Its unique blend of blue and cyan hues makes it a popular choice in various design fields, from graphic design and web development to interior design and fashion. Cerulean Blue's specific hexadecimal code, #2B57BB, precisely defines its composition, ensuring color consistency across different platforms and media. Its name derives from the Latin word "caeruleus," meaning dark blue, further highlighting its connection to the natural world and its timeless appeal. This color carries connotations of knowledge, health, healing, peace, trust, calmness, and stability.

The color #2B57BB, also known as Cerulean Blue, presents moderate accessibility challenges. Its contrast ratio against white is approximately 4.6:1, which meets the WCAG AA standard for normal text but falls short for larger text or user interface components. When used as text on a white background, users with moderate visual impairments may find it difficult to read. For optimal accessibility, consider using it for larger headings or graphic elements. Pairing it with a lighter background color, such as a pale yellow or a very light gray, can significantly improve readability. Conversely, using it as a background color with white or very light text can enhance contrast and improve accessibility. Developers should always test color combinations with accessibility tools to ensure compliance with WCAG guidelines and provide the best user experience for all users, including those with visual impairments.

Shades

Digital Color Formats

RGB
43 87 187
RGB43 87 187
Red
Green
Blue
HSL
221.67deg 62.61% 45.1%
221.6762.6145.1HSL
Hue
Saturation
Lightness
HWB
221.67deg 16.86% 26.67%
221.6716.8626.67HWB
Hue
Whiteness
Blackness
hex#2B57BB
rgb43 87 187
hsl221.67deg 62.61% 45.1%
cmyk77.01% 53.48% 0% 26.67%
hwb221.67deg 16.86% 26.67%
xyz-d650.13 0.11 0.48
oklch0.4854 0.1655 263.56
oklab0.4854 -0.02 -0.16
CMYK
77.01% 53.48% 0% 26.67%
77.0153.48026.67CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.13 0.11 0.48
0.130.110.48XYZ
X
Y
Z
OKLCH
0.4854 0.1655 263.56
0.48540.1655263.56LCH
Lightness
Chroma
Hue
OKLAB
0.4854 -0.02 -0.16
0.4854-0.02-0.16LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

Buttons