Cerulean Blue

#2557B1

General Information about Cerulean Blue

Cerulean Blue, represented by the hexadecimal color code #2557B1, is a captivating shade of blue that evokes feelings of serenity and clarity. It is a color often associated with the sky and the ocean, conveying a sense of vastness and tranquility. In the RGB color model, it consists of 14.51% red, 34.12% green, and 69.41% blue. This specific combination results in a hue that is both calming and visually stimulating. Cerulean Blue is frequently used in design to create a sense of peace and openness, making it a popular choice for branding, web design, and interior decoration. Its balanced composition makes it versatile and adaptable to various applications, contributing to its widespread appeal. The name 'Cerulean' itself is derived from the Latin word 'caeruleus,' meaning 'sky-blue' or 'azure.

The hex color #2557B1, also known as Cerulean Blue, presents some accessibility challenges for web developers. Its relatively low luminance value of approximately 0.2 means that text rendered in this color may lack sufficient contrast against a white or light-colored background. This can make it difficult for users, especially those with visual impairments, to read the content. To ensure accessibility, it's crucial to pair Cerulean Blue with light or very light colors. Using tools to check contrast ratios against WCAG (Web Content Accessibility Guidelines) standards is highly recommended. Aiming for a contrast ratio of at least 4.5:1 for normal text and 3:1 for large text will greatly improve readability and overall user experience. Considering using darker variants of text, or placing the text on very light backgrounds.

Shades

Digital Color Formats

RGB
37 87 177
RGB37 87 177
Red
Green
Blue
HSL
218.57deg 65.42% 41.96%
218.5765.4241.96HSL
Hue
Saturation
Lightness
HWB
218.57deg 14.51% 30.59%
218.5714.5130.59HWB
Hue
Whiteness
Blackness
hex#2557B1
rgb37 87 177
hsl218.57deg 65.42% 41.96%
cmyk79.1% 50.85% 0% 30.59%
hwb218.57deg 14.51% 30.59%
xyz-d650.12 0.1 0.43
oklch0.4755 0.1536 261.05
oklab0.4755 -0.02 -0.15
CMYK
79.1% 50.85% 0% 30.59%
79.150.85030.59CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.12 0.1 0.43
0.120.10.43XYZ
X
Y
Z
OKLCH
0.4755 0.1536 261.05
0.47550.1536261.05LCH
Lightness
Chroma
Hue
OKLAB
0.4755 -0.02 -0.15
0.4755-0.02-0.15LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

Buttons