Cerulean Blue

#1A51CC

General Information about Cerulean Blue

The hexadecimal color #1A51CC, also known as Cerulean Blue, is a vibrant and saturated shade of blue that sits between azure and sapphire on the color spectrum. It is comprised of 10.2% red, 31.8% green, and 80% blue. In the RGB color space, it represents a strong emphasis on the blue channel, resulting in its distinctive appearance. Cerulean Blue is often associated with feelings of calmness, trust, and stability, making it a popular choice for branding and visual communication. In CMYK color model, color #1A51CC has values of 79% cyan, 60% magenta, 0% yellow, and 20% black.

The color #1A51CC, a deep cerulean blue, presents some accessibility challenges, especially when used for text. Its luminance value is relatively low, meaning it may not provide sufficient contrast against lighter backgrounds like white or pale yellow. According to WCAG guidelines, sufficient contrast is crucial for users with visual impairments to perceive content effectively. A contrast ratio of at least 4.5:1 is recommended for standard text and 3:1 for large text. Therefore, when using #1A51CC for text, it's essential to pair it with a very light color to ensure readability. Conversely, when used as a background color, it should be combined with very light text color. Tools like contrast checkers can help verify compliance with accessibility standards, ensuring inclusive design.

Shades

Digital Color Formats

RGB
26 81 204
RGB26 81 204
Red
Green
Blue
HSL
221.46deg 77.39% 45.1%
221.4677.3945.1HSL
Hue
Saturation
Lightness
HWB
221.46deg 10.2% 20%
221.4610.220HWB
Hue
Whiteness
Blackness
hex#1A51CC
rgb26 81 204
hsl221.46deg 77.39% 45.1%
cmyk87.25% 60.29% 0% 20%
hwb221.46deg 10.2% 20%
xyz-d650.14 0.1 0.58
oklch0.4822 0.1992 262.99
oklab0.4822 -0.02 -0.2
CMYK
87.25% 60.29% 0% 20%
87.2560.29020CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.14 0.1 0.58
0.140.10.58XYZ
X
Y
Z
OKLCH
0.4822 0.1992 262.99
0.48220.1992262.99LCH
Lightness
Chroma
Hue
OKLAB
0.4822 -0.02 -0.2
0.4822-0.02-0.2LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

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