Cerulean Blue

#1D4EC9

General Information about Cerulean Blue

The hex color #1D4EC9, commonly referred to as Cerulean Blue, is a captivating shade residing within the blue color family. It possesses a moderate saturation and brightness, contributing to its distinct and appealing visual presence. In the RGB color model, #1D4EC9 is composed of 11.4% red, 30.6% green, and 78.8% blue. Its CMYK representation is 0.85, 0.61, 0.00, 0.21, meaning it requires a significant amount of cyan and magenta in printing. Cerulean Blue is often associated with feelings of serenity, stability, and trust, making it a popular choice for branding and design elements aiming to convey these qualities. Its use can range from creating a sense of calmness in user interfaces to adding a touch of sophistication to marketing materials. The name "Cerulean" itself is derived from the Latin word "caeruleus", meaning "dark blue", often used to describe the color of the sky.

The hex color #1D4EC9, also known as Cerulean Blue, presents some accessibility considerations for web development. Its relatively dark hue means it generally offers sufficient contrast against white or very light backgrounds, which is good for readability. However, it's essential to test color combinations with this shade using accessibility evaluation tools to ensure compliance with WCAG (Web Content Accessibility Guidelines). Specifically, aim for a contrast ratio of at least 4.5:1 for normal text and 3:1 for large text. Avoid pairing #1D4EC9 with similarly dark colors, as this can result in insufficient contrast and make content difficult for users with visual impairments to perceive. When used for links or interactive elements, ensure additional visual cues (e.g., underlines, icons) are present to aid users who may not be able to distinguish color differences effectively. Consider offering high-contrast themes to provide users with the ability to customize their viewing experience.

Shades

Digital Color Formats

RGB
29 78 201
RGB29 78 201
Red
Green
Blue
HSL
222.91deg 74.78% 45.1%
222.9174.7845.1HSL
Hue
Saturation
Lightness
HWB
222.91deg 11.37% 21.18%
222.9111.3721.18HWB
Hue
Whiteness
Blackness
hex#1D4EC9
rgb29 78 201
hsl222.91deg 74.78% 45.1%
cmyk85.57% 61.19% 0% 21.18%
hwb222.91deg 11.37% 21.18%
xyz-d650.14 0.1 0.56
oklch0.4745 0.1983 263.83
oklab0.4745 -0.02 -0.2
CMYK
85.57% 61.19% 0% 21.18%
85.5761.19021.18CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.14 0.1 0.56
0.140.10.56XYZ
X
Y
Z
OKLCH
0.4745 0.1983 263.83
0.47450.1983263.83LCH
Lightness
Chroma
Hue
OKLAB
0.4745 -0.02 -0.2
0.4745-0.02-0.2LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

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