Cerulean Blue

#1E51B8

General Information about Cerulean Blue

The hex color #1E51B8, often referred to as Cerulean Blue, is a deep and captivating shade of blue with a subtle blend of cyan and cobalt undertones. In the RGB color model, it is composed of 12.75% red, 31.76% green, and 72.16% blue. This combination gives it a rich and stable appearance. Cerulean Blue is often associated with tranquility, depth, and stability, making it a popular choice in various design contexts. It is distinct from lighter shades of blue, such as sky blue or azure, possessing a more grounded and serious character, while retaining a sense of creative expression and intellectual curiosity. Its use can evoke feelings of trust, intelligence, and sophistication, contributing to its widespread application in both digital and physical design.

The hex color #1E51B8, a shade of cerulean blue, presents some accessibility considerations for web developers. When used as a background color, it requires careful selection of foreground text to ensure sufficient contrast. According to WCAG guidelines, a contrast ratio of at least 4.5:1 is recommended for normal text and 3:1 for large text. White or very light gray text colors would be suitable choices against this dark blue to meet accessibility standards. Avoid using similarly dark colors for text, as they would likely fail contrast checks, making the content difficult to read for users with visual impairments. Always use contrast checking tools to verify compliance.

Shades

Digital Color Formats

RGB
30 81 184
RGB30 81 184
Red
Green
Blue
HSL
220.13deg 71.96% 41.96%
220.1371.9641.96HSL
Hue
Saturation
Lightness
HWB
220.13deg 11.76% 27.84%
220.1311.7627.84HWB
Hue
Whiteness
Blackness
hex#1E51B8
rgb30 81 184
hsl220.13deg 71.96% 41.96%
cmyk83.7% 55.98% 0% 27.84%
hwb220.13deg 11.76% 27.84%
xyz-d650.12 0.1 0.47
oklch0.4661 0.1722 262.23
oklab0.4661 -0.02 -0.17
CMYK
83.7% 55.98% 0% 27.84%
83.755.98027.84CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.12 0.1 0.47
0.120.10.47XYZ
X
Y
Z
OKLCH
0.4661 0.1722 262.23
0.46610.1722262.23LCH
Lightness
Chroma
Hue
OKLAB
0.4661 -0.02 -0.17
0.4661-0.02-0.17LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

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